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<h1>Source code for torch.storage</h1><div class="highlight"><pre>
<span></span><span class="kn">import</span> <span class="nn">io</span>
<span class="kn">import</span> <span class="nn">torch</span>
<span class="kn">from</span> <span class="nn">._utils</span> <span class="kn">import</span> <span class="n">_type</span><span class="p">,</span> <span class="n">_cuda</span>
<span class="kn">from</span> <span class="nn">torch.types</span> <span class="kn">import</span> <span class="n">Storage</span>
<span class="kn">from</span> <span class="nn">typing</span> <span class="kn">import</span> <span class="n">Any</span><span class="p">,</span> <span class="n">TypeVar</span><span class="p">,</span> <span class="n">Type</span><span class="p">,</span> <span class="n">Union</span><span class="p">,</span> <span class="n">cast</span>
<span class="kn">import</span> <span class="nn">copy</span>
<span class="kn">import</span> <span class="nn">collections</span>
<span class="kn">from</span> <span class="nn">functools</span> <span class="kn">import</span> <span class="n">lru_cache</span>
<span class="kn">import</span> <span class="nn">warnings</span>
<span class="k">try</span><span class="p">:</span>
<span class="kn">import</span> <span class="nn">numpy</span> <span class="k">as</span> <span class="nn">np</span>
<span class="n">HAS_NUMPY</span> <span class="o">=</span> <span class="kc">True</span>
<span class="k">except</span> <span class="ne">ModuleNotFoundError</span><span class="p">:</span>
<span class="n">np</span> <span class="o">=</span> <span class="kc">None</span> <span class="c1"># type: ignore[assignment]</span>
<span class="n">T</span> <span class="o">=</span> <span class="n">TypeVar</span><span class="p">(</span><span class="s1">'T'</span><span class="p">,</span> <span class="n">bound</span><span class="o">=</span><span class="s1">'Union[_StorageBase, TypedStorage]'</span><span class="p">)</span>
<span class="k">class</span> <span class="nc">_StorageBase</span><span class="p">:</span>
<span class="n">_cdata</span><span class="p">:</span> <span class="n">Any</span>
<span class="n">is_sparse</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span>
<span class="n">is_sparse_csr</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span>
<span class="n">device</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">device</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="fm">__len__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="fm">__getitem__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">idx</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">copy_</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source</span><span class="p">:</span> <span class="n">T</span><span class="p">,</span> <span class="n">non_blocking</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">None</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">nbytes</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">size</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">nbytes</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">type</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dtype</span><span class="p">:</span> <span class="nb">str</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">non_blocking</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">cuda</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">device</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">non_blocking</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">element_size</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">get_device</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">data_ptr</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">int</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="c1"># Defined in torch/csrc/generic/StorageSharing.cpp</span>
<span class="k">def</span> <span class="nf">_share_filename_cpu_</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">_share_fd_cpu_</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_new_using_filename_cpu</span><span class="p">(</span><span class="bp">cls</span><span class="p">:</span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">],</span> <span class="n">size</span><span class="p">:</span> <span class="nb">int</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_new_using_fd_cpu</span><span class="p">(</span><span class="bp">cls</span><span class="p">:</span> <span class="n">Type</span><span class="p">[</span><span class="n">T</span><span class="p">],</span> <span class="n">size</span><span class="p">:</span> <span class="nb">int</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">from_buffer</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_new_shared_filename_cpu</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">manager</span><span class="p">,</span> <span class="n">obj</span><span class="p">,</span> <span class="n">size</span><span class="p">,</span> <span class="o">*</span><span class="p">,</span> <span class="n">device</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">dtype</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_release_ipc_counter_cuda</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_new_with_weak_ptr</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">_shared_decref</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">_write_file</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">resize_</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">size</span><span class="p">:</span> <span class="nb">int</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">_weak_ref</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">is_pinned</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">_set_from_file</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">_set_cdata</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">_share_cuda_</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">is_shared</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_new_shared_cuda</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="nf">_shared_incref</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_free_weak_ref</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">is_cuda</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">from_file</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">filename</span><span class="p">,</span> <span class="n">shared</span><span class="p">,</span> <span class="n">nbytes</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_expired</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span> <span class="o">-></span> <span class="n">T</span><span class="p">:</span> <span class="o">...</span> <span class="c1"># noqa: E704</span>
<span class="k">def</span> <span class="fm">__str__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">info_str</span> <span class="o">=</span> <span class="p">(</span>
<span class="sa">f</span><span class="s1">'[</span><span class="si">{</span><span class="n">torch</span><span class="o">.</span><span class="n">typename</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="si">}</span><span class="s1">(device=</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="si">}</span><span class="s1">) '</span>
<span class="sa">f</span><span class="s1">'of size </span><span class="si">{</span><span class="nb">len</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="si">}</span><span class="s1">]'</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="s1">'meta'</span><span class="p">:</span>
<span class="k">return</span> <span class="s1">'...</span><span class="se">\n</span><span class="s1">'</span> <span class="o">+</span> <span class="n">info_str</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">data_str</span> <span class="o">=</span> <span class="s1">' '</span> <span class="o">+</span> <span class="s1">'</span><span class="se">\n</span><span class="s1"> '</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="p">[</span><span class="n">i</span><span class="p">])</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">()))</span>
<span class="k">return</span> <span class="n">data_str</span> <span class="o">+</span> <span class="s1">'</span><span class="se">\n</span><span class="s1">'</span> <span class="o">+</span> <span class="n">info_str</span>
<span class="k">def</span> <span class="fm">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">str</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
<span class="k">def</span> <span class="fm">__iter__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">iter</span><span class="p">(</span><span class="nb">map</span><span class="p">(</span><span class="k">lambda</span> <span class="n">i</span><span class="p">:</span> <span class="bp">self</span><span class="p">[</span><span class="n">i</span><span class="p">],</span> <span class="nb">range</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">())))</span>
<span class="k">def</span> <span class="nf">__copy__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">clone</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">__deepcopy__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">memo</span><span class="p">):</span>
<span class="n">memo</span> <span class="o">=</span> <span class="n">memo</span><span class="o">.</span><span class="n">setdefault</span><span class="p">(</span><span class="s1">'torch'</span><span class="p">,</span> <span class="p">{})</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_cdata</span> <span class="ow">in</span> <span class="n">memo</span><span class="p">:</span>
<span class="k">return</span> <span class="n">memo</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">_cdata</span><span class="p">]</span>
<span class="n">new_storage</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">clone</span><span class="p">()</span>
<span class="n">memo</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">_cdata</span><span class="p">]</span> <span class="o">=</span> <span class="n">new_storage</span>
<span class="k">return</span> <span class="n">new_storage</span>
<span class="k">def</span> <span class="nf">__reduce__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">b</span> <span class="o">=</span> <span class="n">io</span><span class="o">.</span><span class="n">BytesIO</span><span class="p">()</span>
<span class="n">torch</span><span class="o">.</span><span class="n">save</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">_use_new_zipfile_serialization</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span>
<span class="k">return</span> <span class="p">(</span><span class="n">_load_from_bytes</span><span class="p">,</span> <span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">getvalue</span><span class="p">(),))</span>
<span class="k">def</span> <span class="nf">__sizeof__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="n">__sizeof__</span><span class="p">()</span> <span class="o">+</span> <span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">clone</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Returns a copy of this storage"""</span>
<span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="bp">self</span><span class="p">)(</span><span class="bp">self</span><span class="o">.</span><span class="n">nbytes</span><span class="p">(),</span> <span class="n">device</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="p">)</span><span class="o">.</span><span class="n">copy_</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">tolist</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Returns a list containing the elements of this storage"""</span>
<span class="k">return</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">cpu</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Returns a CPU copy of this storage if it's not already on the CPU"""</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">type</span> <span class="o">!=</span> <span class="s1">'cpu'</span><span class="p">:</span>
<span class="k">return</span> <span class="n">torch</span><span class="o">.</span><span class="n">UntypedStorage</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">())</span><span class="o">.</span><span class="n">copy_</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="kc">False</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span>
<span class="k">def</span> <span class="nf">mps</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Returns a CPU copy of this storage if it's not already on the CPU"""</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">type</span> <span class="o">!=</span> <span class="s1">'mps'</span><span class="p">:</span>
<span class="k">return</span> <span class="n">torch</span><span class="o">.</span><span class="n">UntypedStorage</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">(),</span> <span class="n">device</span><span class="o">=</span><span class="s2">"mps"</span><span class="p">)</span><span class="o">.</span><span class="n">copy_</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="kc">False</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span>
<span class="k">def</span> <span class="nf">_to</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dtype</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">dtype</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">dtype</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Argument 'dtype' must be torch.dtype, not </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">dtype</span><span class="p">)</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
<span class="n">storage</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">tensor</span><span class="p">([],</span> <span class="n">dtype</span><span class="o">=</span><span class="n">torch</span><span class="o">.</span><span class="n">uint8</span><span class="p">,</span> <span class="n">device</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="p">)</span><span class="o">.</span><span class="n">set_</span><span class="p">(</span><span class="n">cast</span><span class="p">(</span><span class="n">Storage</span><span class="p">,</span> <span class="bp">self</span><span class="p">))</span><span class="o">.</span><span class="n">to</span><span class="p">(</span><span class="n">dtype</span><span class="p">)</span><span class="o">.</span><span class="n">_typed_storage</span><span class="p">()</span>
<span class="k">if</span> <span class="n">storage</span><span class="o">.</span><span class="n">data_ptr</span><span class="p">()</span> <span class="o">==</span> <span class="bp">self</span><span class="o">.</span><span class="n">data_ptr</span><span class="p">():</span>
<span class="n">storage</span> <span class="o">=</span> <span class="n">storage</span><span class="o">.</span><span class="n">clone</span><span class="p">()</span>
<span class="k">return</span> <span class="n">storage</span>
<span class="k">def</span> <span class="nf">double</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to double type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">double</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">float</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to float type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">float</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">half</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to half type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">half</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">long</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to long type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">long</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">int</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to int type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">int</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">short</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to short type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">short</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">char</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to char type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">int8</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">byte</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to byte type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">uint8</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">bool</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to bool type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">bool</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">bfloat16</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to bfloat16 type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">bfloat16</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">complex_double</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to complex double type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">cdouble</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">complex_float</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Casts this storage to complex float type"""</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">cfloat</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">pin_memory</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Copies the storage to pinned memory, if it's not already pinned."""</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_cuda</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"cannot pin '</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">type</span><span class="p">()</span><span class="si">}</span><span class="s2">' only CPU memory can be pinned"</span><span class="p">)</span>
<span class="kn">import</span> <span class="nn">torch.cuda</span>
<span class="n">allocator</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">cuda</span><span class="o">.</span><span class="n">memory</span><span class="o">.</span><span class="n">_host_allocator</span><span class="p">()</span> <span class="c1"># type: ignore[attr-defined]</span>
<span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="bp">self</span><span class="p">)(</span><span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">(),</span> <span class="n">allocator</span><span class="o">=</span><span class="n">allocator</span><span class="p">)</span><span class="o">.</span><span class="n">copy_</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">share_memory_</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Moves the storage to shared memory.</span>
<span class="sd"> This is a no-op for storages already in shared memory and for CUDA</span>
<span class="sd"> storages, which do not need to be moved for sharing across processes.</span>
<span class="sd"> Storages in shared memory cannot be resized.</span>
<span class="sd"> Returns: self</span>
<span class="sd"> """</span>
<span class="kn">from</span> <span class="nn">torch.multiprocessing</span> <span class="kn">import</span> <span class="n">get_sharing_strategy</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">is_cuda</span><span class="p">:</span>
<span class="k">pass</span> <span class="c1"># CUDA doesn't use POSIX shared memory</span>
<span class="k">elif</span> <span class="n">get_sharing_strategy</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'file_system'</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_share_filename_cpu_</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_share_fd_cpu_</span><span class="p">()</span>
<span class="k">return</span> <span class="bp">self</span>
<span class="nd">@classmethod</span>
<span class="k">def</span> <span class="nf">_new_shared</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="n">size</span><span class="p">,</span> <span class="o">*</span><span class="p">,</span> <span class="n">device</span><span class="o">=</span><span class="s1">'cpu'</span><span class="p">):</span>
<span class="sd">"""Creates a new storage in shared memory with the same data type"""</span>
<span class="kn">from</span> <span class="nn">torch.multiprocessing</span> <span class="kn">import</span> <span class="n">get_sharing_strategy</span>
<span class="n">device</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">device</span><span class="p">(</span><span class="n">device</span><span class="p">)</span>
<span class="k">if</span> <span class="n">device</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="s1">'cuda'</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">cls</span><span class="p">(</span><span class="n">size</span><span class="p">,</span> <span class="n">device</span><span class="o">=</span><span class="n">device</span><span class="p">)</span>
<span class="k">elif</span> <span class="n">get_sharing_strategy</span><span class="p">()</span> <span class="o">==</span> <span class="s1">'file_system'</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">_new_using_filename_cpu</span><span class="p">(</span><span class="n">size</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">cls</span><span class="o">.</span><span class="n">_new_using_fd_cpu</span><span class="p">(</span><span class="n">size</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">untyped</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span>
<div class="viewcode-block" id="UntypedStorage"><a class="viewcode-back" href="../../storage.html#torch.UntypedStorage">[docs]</a><span class="k">class</span> <span class="nc">UntypedStorage</span><span class="p">(</span><span class="n">torch</span><span class="o">.</span><span class="n">_C</span><span class="o">.</span><span class="n">StorageBase</span><span class="p">,</span> <span class="n">_StorageBase</span><span class="p">):</span>
<span class="k">def</span> <span class="fm">__getitem__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="s1">'meta'</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">(</span><span class="s2">"Not available for 'meta' device type"</span><span class="p">)</span>
<span class="k">return</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__getitem__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">is_cuda</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="s1">'cuda'</span></div>
<span class="k">def</span> <span class="nf">_load_from_bytes</span><span class="p">(</span><span class="n">b</span><span class="p">):</span>
<span class="k">return</span> <span class="n">torch</span><span class="o">.</span><span class="n">load</span><span class="p">(</span><span class="n">io</span><span class="o">.</span><span class="n">BytesIO</span><span class="p">(</span><span class="n">b</span><span class="p">))</span>
<span class="n">_StorageBase</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">_type</span> <span class="c1"># type: ignore[assignment]</span>
<span class="n">_StorageBase</span><span class="o">.</span><span class="n">cuda</span> <span class="o">=</span> <span class="n">_cuda</span> <span class="c1"># type: ignore[assignment]</span>
<span class="nd">@lru_cache</span><span class="p">(</span><span class="n">maxsize</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_dtype_to_storage_type_map</span><span class="p">():</span>
<span class="c1"># NOTE: We should no longer add dtypes to this map. This map</span>
<span class="c1"># is only used for BC/FC with older PyTorch versions. Going forward,</span>
<span class="c1"># new dtypes of TypedStorage should not translate to a legacy</span>
<span class="c1"># <type>Storage class. Instead, new dtypes of TypedStorage should</span>
<span class="c1"># be serialized as an UntypedStorage paired with a torch.dtype</span>
<span class="k">return</span> <span class="p">{</span>
<span class="n">torch</span><span class="o">.</span><span class="n">double</span><span class="p">:</span> <span class="s1">'DoubleStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">float</span><span class="p">:</span> <span class="s1">'FloatStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">half</span><span class="p">:</span> <span class="s1">'HalfStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">long</span><span class="p">:</span> <span class="s1">'LongStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">int</span><span class="p">:</span> <span class="s1">'IntStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">int16</span><span class="p">:</span> <span class="s1">'ShortStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">int8</span><span class="p">:</span> <span class="s1">'CharStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">uint8</span><span class="p">:</span> <span class="s1">'ByteStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">bool</span><span class="p">:</span> <span class="s1">'BoolStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">bfloat16</span><span class="p">:</span> <span class="s1">'BFloat16Storage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">cdouble</span><span class="p">:</span> <span class="s1">'ComplexDoubleStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">cfloat</span><span class="p">:</span> <span class="s1">'ComplexFloatStorage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">qint8</span><span class="p">:</span> <span class="s1">'QInt8Storage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">qint32</span><span class="p">:</span> <span class="s1">'QInt32Storage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">quint8</span><span class="p">:</span> <span class="s1">'QUInt8Storage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">quint4x2</span><span class="p">:</span> <span class="s1">'QUInt4x2Storage'</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">quint2x4</span><span class="p">:</span> <span class="s1">'QUInt2x4Storage'</span><span class="p">,</span>
<span class="p">}</span>
<span class="nd">@lru_cache</span><span class="p">(</span><span class="n">maxsize</span><span class="o">=</span><span class="kc">None</span><span class="p">)</span>
<span class="k">def</span> <span class="nf">_storage_type_to_dtype_map</span><span class="p">():</span>
<span class="n">dtype_map</span> <span class="o">=</span> <span class="p">{</span>
<span class="n">val</span><span class="p">:</span> <span class="n">key</span> <span class="k">for</span> <span class="n">key</span><span class="p">,</span> <span class="n">val</span> <span class="ow">in</span> <span class="n">_dtype_to_storage_type_map</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()}</span>
<span class="k">return</span> <span class="n">dtype_map</span>
<span class="k">def</span> <span class="nf">_get_storage_from_sequence</span><span class="p">(</span><span class="n">sequence</span><span class="p">,</span> <span class="n">dtype</span><span class="p">,</span> <span class="n">device</span><span class="p">):</span>
<span class="k">if</span> <span class="n">dtype</span> <span class="ow">in</span> <span class="p">[</span><span class="n">torch</span><span class="o">.</span><span class="n">quint8</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">quint4x2</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">quint2x4</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">qint32</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">qint8</span><span class="p">]:</span>
<span class="n">interpret_dtypes</span> <span class="o">=</span> <span class="p">{</span>
<span class="n">torch</span><span class="o">.</span><span class="n">quint8</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">uint8</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">quint4x2</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">uint8</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">quint2x4</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">uint8</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">qint32</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">int32</span><span class="p">,</span>
<span class="n">torch</span><span class="o">.</span><span class="n">qint8</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">int8</span>
<span class="p">}</span>
<span class="n">tmp_tensor</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">tensor</span><span class="p">(</span>
<span class="n">sequence</span><span class="p">,</span>
<span class="n">dtype</span><span class="o">=</span><span class="n">interpret_dtypes</span><span class="p">[</span><span class="n">dtype</span><span class="p">],</span>
<span class="n">device</span><span class="o">=</span><span class="n">device</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">tmp_tensor</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">tensor</span><span class="p">(</span>
<span class="n">sequence</span><span class="p">,</span>
<span class="n">dtype</span><span class="o">=</span><span class="n">dtype</span><span class="p">,</span>
<span class="n">device</span><span class="o">=</span><span class="n">device</span><span class="p">)</span>
<span class="k">return</span> <span class="n">tmp_tensor</span><span class="o">.</span><span class="n">_typed_storage</span><span class="p">()</span><span class="o">.</span><span class="n">_untyped_storage</span>
<span class="k">def</span> <span class="nf">_isint</span><span class="p">(</span><span class="n">x</span><span class="p">):</span>
<span class="k">if</span> <span class="n">HAS_NUMPY</span><span class="p">:</span>
<span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="p">(</span><span class="nb">int</span><span class="p">,</span> <span class="n">np</span><span class="o">.</span><span class="n">integer</span><span class="p">))</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="nb">int</span><span class="p">)</span>
<span class="n">_always_warn_typed_storage_removal</span> <span class="o">=</span> <span class="kc">False</span>
<span class="k">def</span> <span class="nf">_get_always_warn_typed_storage_removal</span><span class="p">():</span>
<span class="k">return</span> <span class="n">_always_warn_typed_storage_removal</span>
<span class="k">def</span> <span class="nf">_set_always_warn_typed_storage_removal</span><span class="p">(</span><span class="n">always_warn</span><span class="p">):</span>
<span class="k">global</span> <span class="n">_always_warn_typed_storage_removal</span>
<span class="k">assert</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">always_warn</span><span class="p">,</span> <span class="nb">bool</span><span class="p">)</span>
<span class="n">_always_warn_typed_storage_removal</span> <span class="o">=</span> <span class="n">always_warn</span>
<span class="k">def</span> <span class="nf">_warn_typed_storage_removal</span><span class="p">(</span><span class="n">stacklevel</span><span class="o">=</span><span class="mi">2</span><span class="p">):</span>
<span class="k">global</span> <span class="n">_always_warn_typed_storage_removal</span>
<span class="k">def</span> <span class="nf">is_first_time</span><span class="p">():</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">_warn_typed_storage_removal</span><span class="p">,</span> <span class="s1">'has_warned'</span><span class="p">):</span>
<span class="k">return</span> <span class="kc">True</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="ow">not</span> <span class="n">_warn_typed_storage_removal</span><span class="o">.</span><span class="vm">__dict__</span><span class="p">[</span><span class="s1">'has_warned'</span><span class="p">]</span>
<span class="k">if</span> <span class="n">_get_always_warn_typed_storage_removal</span><span class="p">()</span> <span class="ow">or</span> <span class="n">is_first_time</span><span class="p">():</span>
<span class="n">message</span> <span class="o">=</span> <span class="p">(</span>
<span class="s2">"TypedStorage is deprecated. It will be removed in the future and "</span>
<span class="s2">"UntypedStorage will be the only storage class. This should only matter "</span>
<span class="s2">"to you if you are using storages directly. To access UntypedStorage "</span>
<span class="s2">"directly, use tensor.untyped_storage() instead of tensor.storage()"</span>
<span class="p">)</span>
<span class="n">warnings</span><span class="o">.</span><span class="n">warn</span><span class="p">(</span><span class="n">message</span><span class="p">,</span> <span class="ne">UserWarning</span><span class="p">,</span> <span class="n">stacklevel</span><span class="o">=</span><span class="n">stacklevel</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span>
<span class="n">_warn_typed_storage_removal</span><span class="o">.</span><span class="vm">__dict__</span><span class="p">[</span><span class="s1">'has_warned'</span><span class="p">]</span> <span class="o">=</span> <span class="kc">True</span>
<span class="k">def</span> <span class="nf">_reset_warn_typed_storage_removal</span><span class="p">():</span>
<span class="n">_warn_typed_storage_removal</span><span class="o">.</span><span class="vm">__dict__</span><span class="p">[</span><span class="s1">'has_warned'</span><span class="p">]</span> <span class="o">=</span> <span class="kc">False</span>
<div class="viewcode-block" id="TypedStorage"><a class="viewcode-back" href="../../storage.html#torch.TypedStorage">[docs]</a><span class="k">class</span> <span class="nc">TypedStorage</span><span class="p">:</span>
<span class="n">is_sparse</span> <span class="o">=</span> <span class="kc">False</span>
<span class="n">dtype</span><span class="p">:</span> <span class="n">torch</span><span class="o">.</span><span class="n">dtype</span>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">_dtype</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">dtype</span>
<div class="viewcode-block" id="TypedStorage.fill_"><a class="viewcode-back" href="../../storage.html#torch.TypedStorage.fill_">[docs]</a> <span class="k">def</span> <span class="nf">fill_</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span>
<span class="n">_warn_typed_storage_removal</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_setitem</span><span class="p">(</span><span class="nb">slice</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_size</span><span class="p">()),</span> <span class="n">value</span><span class="p">)</span>
<span class="k">return</span> <span class="bp">self</span></div>
<span class="k">def</span> <span class="fm">__new__</span><span class="p">(</span><span class="bp">cls</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="n">wrap_storage</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">dtype</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">device</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">_internal</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">_internal</span><span class="p">:</span>
<span class="n">_warn_typed_storage_removal</span><span class="p">()</span>
<span class="k">if</span> <span class="bp">cls</span> <span class="o">==</span> <span class="n">torch</span><span class="o">.</span><span class="n">storage</span><span class="o">.</span><span class="n">_LegacyStorage</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s2">"Only child classes of _LegacyStorage can be instantiated"</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">cls</span> <span class="o">==</span> <span class="n">TypedStorage</span><span class="p">:</span>
<span class="k">return</span> <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__new__</span><span class="p">(</span><span class="bp">cls</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">arg_error_msg</span> <span class="o">=</span> <span class="p">(</span>
<span class="sa">f</span><span class="s1">'</span><span class="si">{</span><span class="bp">cls</span><span class="si">}</span><span class="s1">.__new__ received an invalid combination '</span>
<span class="sa">f</span><span class="s1">'of arguments. Expected one of:</span><span class="se">\n</span><span class="s1">'</span>
<span class="s1">' * no arguments</span><span class="se">\n</span><span class="s1">'</span>
<span class="s1">' * (int size)</span><span class="se">\n</span><span class="s1">'</span>
<span class="s1">' * (Sequence data)</span><span class="se">\n</span><span class="s1">'</span>
<span class="s1">' * (*, UntypedStorage wrap_storage)'</span><span class="p">)</span>
<span class="k">if</span> <span class="n">device</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="s2">"</span><span class="se">\n</span><span class="s2">Keyword argument 'device' cannot be specified"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">dtype</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="s2">"</span><span class="se">\n</span><span class="s2">Keyword argument 'dtype' cannot be specified"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">wrap_storage</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">></span> <span class="mi">1</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="s2">"</span><span class="se">\n</span><span class="s2">Too many positional arguments"</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">_isint</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">collections</span><span class="o">.</span><span class="n">abc</span><span class="o">.</span><span class="n">Sequence</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="sa">f</span><span class="s2">"</span><span class="se">\n</span><span class="s2">Argument type not recognized: </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
<span class="k">return</span> <span class="n">TypedStorage</span><span class="p">(</span>
<span class="o">*</span><span class="n">args</span><span class="p">,</span>
<span class="n">dtype</span><span class="o">=</span><span class="bp">cls</span><span class="o">.</span><span class="n">_dtype</span><span class="p">,</span>
<span class="n">device</span><span class="o">=</span><span class="s1">'cuda'</span> <span class="k">if</span> <span class="bp">cls</span><span class="o">.</span><span class="vm">__module__</span> <span class="o">==</span> <span class="s1">'torch.cuda'</span> <span class="k">else</span> <span class="s1">'cpu'</span><span class="p">,</span>
<span class="n">_internal</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="s2">"</span><span class="se">\n</span><span class="s2">No positional arguments should be given when using "</span>
<span class="s2">"'wrap_storage'"</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">wrap_storage</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">UntypedStorage</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="sa">f</span><span class="s2">"</span><span class="se">\n</span><span class="s2">Argument 'wrap_storage' must be UntypedStorage, but got </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">wrap_storage</span><span class="p">)</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
<span class="n">cls_device</span> <span class="o">=</span> <span class="s1">'cuda'</span> <span class="k">if</span> <span class="bp">cls</span><span class="o">.</span><span class="vm">__module__</span> <span class="o">==</span> <span class="s1">'torch.cuda'</span> <span class="k">else</span> <span class="s1">'cpu'</span>
<span class="k">if</span> <span class="n">wrap_storage</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">type</span> <span class="o">!=</span> <span class="n">cls_device</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="sa">f</span><span class="s2">"</span><span class="se">\n</span><span class="s2">Device of 'wrap_storage' must be </span><span class="si">{</span><span class="n">cls_device</span><span class="si">}</span><span class="s2">"</span>
<span class="sa">f</span><span class="s2">", but got </span><span class="si">{</span><span class="n">wrap_storage</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">type</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
<span class="k">return</span> <span class="n">TypedStorage</span><span class="p">(</span>
<span class="o">*</span><span class="n">args</span><span class="p">,</span>
<span class="n">wrap_storage</span><span class="o">=</span><span class="n">wrap_storage</span><span class="p">,</span>
<span class="n">dtype</span><span class="o">=</span><span class="bp">cls</span><span class="o">.</span><span class="n">dtype</span><span class="p">,</span>
<span class="n">_internal</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="n">device</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">dtype</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">wrap_storage</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">_internal</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">_internal</span><span class="p">:</span>
<span class="n">_warn_typed_storage_removal</span><span class="p">()</span>
<span class="n">arg_error_msg</span> <span class="o">=</span> <span class="p">(</span>
<span class="s1">'TypedStorage.__init__ received an invalid combination '</span>
<span class="s1">'of arguments. Expected one of:</span><span class="se">\n</span><span class="s1">'</span>
<span class="s1">' * (*, torch.device device, torch.dtype dtype)</span><span class="se">\n</span><span class="s1">'</span>
<span class="s1">' * (int size, *, torch.device device, torch.dtype dtype)</span><span class="se">\n</span><span class="s1">'</span>
<span class="s1">' * (Sequence data, *, torch.device device, torch.dtype dtype)</span><span class="se">\n</span><span class="s1">'</span>
<span class="s1">' * (*, UntypedStorage wrap_storage, torch.dtype dtype)'</span><span class="p">)</span>
<span class="k">if</span> <span class="n">wrap_storage</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="s2">"</span><span class="se">\n</span><span class="s2">No positional arguments should be given when using "</span>
<span class="s2">"'wrap_storage'"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">dtype</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="s2">"</span><span class="se">\n</span><span class="s2">Argument 'dtype' must be specified"</span><span class="p">)</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">dtype</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">dtype</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="sa">f</span><span class="s2">"</span><span class="se">\n</span><span class="s2">Argument 'dtype' must be torch.dtype, not </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">dtype</span><span class="p">)</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">device</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="s2">"</span><span class="se">\n</span><span class="s2">Argument 'device' should not be specified when 'wrap_storage' is given"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">dtype</span> <span class="o">=</span> <span class="n">dtype</span>
<span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">wrap_storage</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">UntypedStorage</span><span class="p">):</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="sa">f</span><span class="s2">"</span><span class="se">\n</span><span class="s2">Argument 'wrap_storage' must be UntypedStorage, but got </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">wrap_storage</span><span class="p">)</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_untyped_storage</span> <span class="o">=</span> <span class="n">wrap_storage</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">dtype</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">get_default_dtype</span><span class="p">()</span> <span class="k">if</span> <span class="n">dtype</span> <span class="ow">is</span> <span class="kc">None</span> <span class="k">else</span> <span class="n">dtype</span>
<span class="n">device</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">device</span><span class="p">(</span><span class="s1">'cpu'</span> <span class="k">if</span> <span class="n">device</span> <span class="ow">is</span> <span class="kc">None</span> <span class="k">else</span> <span class="n">device</span><span class="p">)</span>
<span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">dtype</span> <span class="ow">in</span> <span class="p">[</span><span class="n">torch</span><span class="o">.</span><span class="n">quint8</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">quint4x2</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">quint2x4</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">qint32</span><span class="p">,</span> <span class="n">torch</span><span class="o">.</span><span class="n">qint8</span><span class="p">]:</span>
<span class="k">if</span> <span class="n">device</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="s1">'cuda'</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span><span class="s2">"Cannot create CUDA storage with quantized dtype"</span><span class="p">)</span>
<span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_untyped_storage</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">UntypedStorage</span><span class="p">(</span><span class="n">device</span><span class="o">=</span><span class="n">device</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
<span class="k">if</span> <span class="n">_isint</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_untyped_storage</span> <span class="o">=</span> <span class="n">torch</span><span class="o">.</span><span class="n">UntypedStorage</span><span class="p">(</span><span class="nb">int</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="o">*</span> <span class="bp">self</span><span class="o">.</span><span class="n">_element_size</span><span class="p">(),</span> <span class="n">device</span><span class="o">=</span><span class="n">device</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">collections</span><span class="o">.</span><span class="n">abc</span><span class="o">.</span><span class="n">Sequence</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">_untyped_storage</span> <span class="o">=</span> <span class="n">_get_storage_from_sequence</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="bp">self</span><span class="o">.</span><span class="n">dtype</span><span class="p">,</span> <span class="n">device</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="sa">f</span><span class="s2">"</span><span class="se">\n</span><span class="s2">Argument type not recognized: </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">(</span>
<span class="n">arg_error_msg</span> <span class="o">+</span>
<span class="s2">"</span><span class="se">\n</span><span class="s2">Too many positional arguments"</span><span class="p">)</span>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">is_cuda</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">_warn_typed_storage_removal</span><span class="p">()</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_untyped_storage</span><span class="o">.</span><span class="n">device</span><span class="o">.</span><span class="n">type</span> <span class="o">==</span> <span class="s1">'cuda'</span>
<div class="viewcode-block" id="TypedStorage.untyped"><a class="viewcode-back" href="../../storage.html#torch.TypedStorage.untyped">[docs]</a> <span class="k">def</span> <span class="nf">untyped</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""Returns the internal :class:`torch.UntypedStorage`"""</span>
<span class="n">_warn_typed_storage_removal</span><span class="p">()</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_untyped_storage</span></div>
<span class="k">def</span> <span class="nf">_new_wrapped_storage</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">untyped_storage</span><span class="p">):</span>
<span class="k">assert</span> <span class="nb">type</span><span class="p">(</span><span class="n">untyped_storage</span><span class="p">)</span> <span class="o">==</span> <span class="n">torch</span><span class="o">.</span><span class="n">UntypedStorage</span>
<span class="k">if</span> <span class="nb">type</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">==</span> <span class="n">TypedStorage</span><span class="p">:</span>
<span class="k">return</span> <span class="n">TypedStorage</span><span class="p">(</span>
<span class="n">wrap_storage</span><span class="o">=</span><span class="n">untyped_storage</span><span class="p">,</span>
<span class="n">dtype</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">dtype</span><span class="p">,</span>
<span class="n">_internal</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="bp">self</span><span class="p">)(</span><span class="n">wrap_storage</span><span class="o">=</span><span class="n">untyped_storage</span><span class="p">)</span>
<span class="k">def</span> <span class="fm">__len__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">_warn_typed_storage_removal</span><span class="p">()</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_size</span><span class="p">()</span>
<span class="k">def</span> <span class="nf">_maybe_wrap_index</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">idx</span><span class="p">,</span> <span class="n">is_stop</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span>
<span class="k">if</span> <span class="n">idx</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">if</span> <span class="n">is_stop</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_size</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="mi">0</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">if</span> <span class="nb">type</span><span class="p">(</span><span class="n">idx</span><span class="p">)</span> <span class="o">!=</span> <span class="nb">int</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span>
<span class="sa">f</span><span class="s2">"can't index a </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="si">}</span><span class="s2"> with </span><span class="si">{</span><span class="nb">type</span><span class="p">(</span><span class="n">idx</span><span class="p">)</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span>
<span class="k">if</span> <span class="n">is_stop</span><span class="p">:</span>
<span class="k">if</span> <span class="p">(</span><span class="n">idx</span> <span class="o">></span> <span class="bp">self</span><span class="o">.</span><span class="n">_size</span><span class="p">())</span> <span class="ow">or</span> <span class="p">(</span><span class="n">idx</span> <span class="o"><</span> <span class="o">-</span><span class="bp">self</span><span class="o">.</span><span class="n">_size</span><span class="p">()):</span>
<span class="k">raise</span> <span class="ne">IndexError</span><span class="p">(</span>
<span class="sa">f</span><span class="s1">'index </span><span class="si">{</span><span class="n">idx</span><span class="si">}</span><span class="s1"> out of range for storage of size </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">()</span><span class="si">}</span><span class="s1">'</span><span class="p">)</span>
<span class="k">if</span> <span class="n">idx</span> <span class="o">></span> <span class="mi">0</span><span class="p">:</span>
<span class="k">return</span> <span class="n">idx</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="n">idx</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">_size</span><span class="p">()</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">if</span> <span class="p">(</span><span class="n">idx</span> <span class="o">>=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_size</span><span class="p">())</span> <span class="ow">or</span> <span class="p">(</span><span class="n">idx</span> <span class="o"><</span> <span class="o">-</span><span class="bp">self</span><span class="o">.</span><span class="n">_size</span><span class="p">()):</span>
<span class="k">raise</span> <span class="ne">IndexError</span><span class="p">(</span>
<span class="sa">f</span><span class="s1">'index </span><span class="si">{</span><span class="n">idx</span><span class="si">}</span><span class="s1"> out of range for storage of size </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">size</span><span class="p">()</span><span class="si">}</span><span class="s1">'</span><span class="p">)</span>
<span class="k">return</span> <span class="n">idx</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">_size</span><span class="p">()</span>