Thread: [Matplotlib-users] Fatal Python error when importing pyplot

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matplotlib-users

[Matplotlib-users] Fatal Python error when importing pyplot

From: Jeremy C. <jer...@gm...> - 2009-03-09 15:43:57

I am using Mac OS X 10.5.5 and have installed Enthought's latest Python
distribution which includes Matplotlib 0.98.3.  I get a fatal python error
whenever I try to import matplotlib.pyplot.  The exact message I get is:
Fatal Python error: Interpreter not initialized (version mismatch?)
Abort trap

Has anyone else had a problem with this?  Please help me because I can't do
any plotting until it's fixed!

Thanks,
Jeremy

Re: [Matplotlib-users] Fatal Python error when importing pyplot

From: John H. <jd...@gm...> - 2009-03-09 16:08:23

On Mon, Mar 9, 2009 at 10:43 AM, Jeremy Conlin <jer...@gm...> wrote:

> I am using Mac OS X 10.5.5 and have installed Enthought's latest Python
> distribution which includes Matplotlib 0.98.3.  I get a fatal python error
> whenever I try to import matplotlib.pyplot.  The exact message I get is:
> Fatal Python error: Interpreter not initialized (version mismatch?)
> Abort trap
>
> Has anyone else had a problem with this?  Please help me because I can't do
> any plotting until it's fixed!
>

So you haven't installed matplotlib or wxpython separately?  This error can
arise when the version of python that built the extension is not the same as
the version of python you are running.  I suggest making sure you have a
clean install of enthought python (remove the install dir entirely),
reinstall it, and if you still see the same problem report it on the
enthought list because it looks like a build problem more than a matplotlib
problem.

Before you report, you may want to do some extra diagnostics.  Eg create a
script like

  import matplotlib
  matplotlib.use('Agg')
  import matplotlib.pyplot

and try running this script, replacing 'Agg' with 'PS', 'PDF', 'TkAgg' and
'WXAgg' and noting whether all fail in the same way, or if only some do.

Re: [Matplotlib-users] Fatal Python error when importing pyplot

From: Jeremy C. <jer...@gm...> - 2009-03-09 20:04:23

On Mon, Mar 9, 2009 at 12:08 PM, John Hunter <jd...@gm...> wrote:

>
>
> On Mon, Mar 9, 2009 at 10:43 AM, Jeremy Conlin <jer...@gm...> wrote:
>
>> I am using Mac OS X 10.5.5 and have installed Enthought's latest Python
>> distribution which includes Matplotlib 0.98.3.  I get a fatal python error
>> whenever I try to import matplotlib.pyplot.  The exact message I get is:
>> Fatal Python error: Interpreter not initialized (version mismatch?)
>> Abort trap
>>
>> Has anyone else had a problem with this?  Please help me because I can't
>> do any plotting until it's fixed!
>>
>
>
> So you haven't installed matplotlib or wxpython separately?  This error can
> arise when the version of python that built the extension is not the same as
> the version of python you are running.  I suggest making sure you have a
> clean install of enthought python (remove the install dir entirely),
> reinstall it, and if you still see the same problem report it on the
> enthought list because it looks like a build problem more than a matplotlib
> problem.
>

I did not install matplotlib seperately.  A while back I did play with
wxpython and wxwidgets, but my Python script that uses those libraries still
work well.  I did just reinstall my enthought python this morning when I was
having these problems.  I didn't delete anything before installing, I just
assumed it would overwrite the old/bad stuff.


>
> Before you report, you may want to do some extra diagnostics.  Eg create a
> script like
>
>   import matplotlib
>   matplotlib.use('Agg')
>   import matplotlib.pyplot
>
>
> and try running this script, replacing 'Agg' with 'PS', 'PDF', 'TkAgg' and
> 'WXAgg' and noting whether all fail in the same way, or if only some do.



Now this was a good idea.  Every backend worked except TkAgg which was my
default specified in my ~/.matplotlib/matplotlibrc file.

Jeremy

Re: [Matplotlib-users] Fatal Python error when importing pyplot

From: Jeff W. <js...@fa...> - 2009-03-09 16:13:20

Jeremy Conlin wrote:
> I am using Mac OS X 10.5.5 and have installed Enthought's latest 
> Python distribution which includes Matplotlib 0.98.3.  I get a fatal 
> python error whenever I try to import matplotlib.pyplot.  The exact 
> message I get is:
>
> Fatal Python error: Interpreter not initialized (version mismatch?)
> Abort trap
>
> Has anyone else had a problem with this?  Please help me because I 
> can't do any plotting until it's fixed!
>
> Thanks,
> Jeremy

Jeremy:  That usually means you are importing a module into a different 
version of python than it was built against.  Are you sure you are 
running Enthough python when you import matplotlib?

-Jeff

-- 
Jeffrey S. Whitaker         Phone  : (303)497-6313
Meteorologist               FAX    : (303)497-6449
NOAA/OAR/PSD  R/PSD1        Email  : Jef...@no...
325 Broadway                Office : Skaggs Research Cntr 1D-113
Boulder, CO, USA 80303-3328 Web    : http://tinyurl.com/5telg

Re: [Matplotlib-users] Fatal Python error when importing pyplot

From: Jeff W. <js...@fa...> - 2009-03-09 16:19:23

Jeremy Conlin wrote:
> I am using Mac OS X 10.5.5 and have installed Enthought's latest 
> Python distribution which includes Matplotlib 0.98.3.  I get a fatal 
> python error whenever I try to import matplotlib.pyplot.  The exact 
> message I get is:
>
> Fatal Python error: Interpreter not initialized (version mismatch?)
> Abort trap
>
> Has anyone else had a problem with this?  Please help me because I 
> can't do any plotting until it's fixed!
>
> Thanks,
> Jeremy
Jeremy:  That sometimes means you are importing a module into a 
different version of python than it was built against.  Are you sure you 
are running Enthough python when you import matplotlib?

-Jeff


-- 
Jeffrey S. Whitaker         Phone  : (303)497-6313
Meteorologist               FAX    : (303)497-6449
NOAA/OAR/PSD  R/PSD1        Email  : Jef...@no...
325 Broadway                Office : Skaggs Research Cntr 1D-113
Boulder, CO, USA 80303-3328 Web    : http://tinyurl.com/5telg

Re: [Matplotlib-users] Fatal Python error when importing pyplot

From: Jeff W. <js...@fa...> - 2009-03-09 16:50:32

Jeremy Conlin wrote:
>
>
> On Mon, Mar 9, 2009 at 12:19 PM, Jeff Whitaker <js...@fa... 
> <mailto:js...@fa...>> wrote:
>
>     Jeremy Conlin wrote:
>
>         I am using Mac OS X 10.5.5 and have installed Enthought's
>         latest Python distribution which includes Matplotlib 0.98.3.
>          I get a fatal python error whenever I try to import
>         matplotlib.pyplot.  The exact message I get is:
>
>         Fatal Python error: Interpreter not initialized (version
>         mismatch?)
>         Abort trap
>
>         Has anyone else had a problem with this?  Please help me
>         because I can't do any plotting until it's fixed!
>
>         Thanks,
>         Jeremy
>
>     Jeremy:  That sometimes means you are importing a module into a
>     different version of python than it was built against.  Are you
>     sure you are running Enthough python when you import matplotlib?
>
>
> I'm pretty sure it's the Enthought python.  
>
> $ python --version
> Python 2.5.2 |EPD Py25 4.1.30101|
>
> Jeremy
Jeremy:  Then unless you have DYLD_LIBRARY_PATH or PYTHONPATH set so 
that the wrong python libs or extensions are being picked up, it must be 
an EPD problem.  I'd ask on the EPD list.

-Jeff

-- 
Jeffrey S. Whitaker         Phone  : (303)497-6313
Meteorologist               FAX    : (303)497-6449
NOAA/OAR/PSD  R/PSD1        Email  : Jef...@no...
325 Broadway                Office : Skaggs Research Cntr 1D-113
Boulder, CO, USA 80303-3328 Web    : http://tinyurl.com/5telg

Re: [Matplotlib-users] Fatal Python error when importing pyplot

From: Jeremy C. <jer...@gm...> - 2009-03-09 20:03:13

On Mon, Mar 9, 2009 at 12:50 PM, Jeff Whitaker <js...@fa...> wrote:

> Jeremy Conlin wrote:
>
>
>>
>> On Mon, Mar 9, 2009 at 12:19 PM, Jeff Whitaker <js...@fa...<mailto:
>> js...@fa...>> wrote:
>>
>>    Jeremy Conlin wrote:
>>
>>        I am using Mac OS X 10.5.5 and have installed Enthought's
>>        latest Python distribution which includes Matplotlib 0.98.3.
>>         I get a fatal python error whenever I try to import
>>        matplotlib.pyplot.  The exact message I get is:
>>
>>        Fatal Python error: Interpreter not initialized (version
>>        mismatch?)
>>        Abort trap
>>
>>        Has anyone else had a problem with this?  Please help me
>>        because I can't do any plotting until it's fixed!
>>
>>        Thanks,
>>        Jeremy
>>
>>    Jeremy:  That sometimes means you are importing a module into a
>>    different version of python than it was built against.  Are you
>>    sure you are running Enthough python when you import matplotlib?
>>
>>
>> I'm pretty sure it's the Enthought python.
>> $ python --version
>> Python 2.5.2 |EPD Py25 4.1.30101|
>>
>> Jeremy
>>
> Jeremy:  Then unless you have DYLD_LIBRARY_PATH or PYTHONPATH set so that
> the wrong python libs or extensions are being picked up, it must be an EPD
> problem.  I'd ask on the EPD list.


Oops.  A long time ago I set PYTHONPATH in my bash_profile.  The value for
that is now wrong.  Now that I've fixed it, everything seems to work fine.

Thanks for the help.
Jeremy