Modules and Packages in Python Programming Language.pptx
- 1. Understand ng Modules and Packages n Python An Overview of Python's Modular Programming
- 2. •How do modules help you write clear and focused code in Python? Python lets you write code in small parts called modules. You can use the ‘import’ statement to combine modules easily. Modules help you write clear and focused code. Python is good for making big and clean software. Python modules make your code easy tounderstand and work with.
- 3. What are Modules? A Python module is a file containing Python definitions and statements. A module can define functions, classes, and variables. A module can also include runnable code. Grouping related code into a module makes the code easier to understand and use. It also makes the code logically organized. The file name is the module name with the suffix .py appended. Examples of common modules (e.g., math, random, datetime)
- 4. Creating and Using Modules How to create a module TO CREATE A MODULE, YOU JUST NEED TO SAVE YOUR CODE IN A FILE wITH THE .pY EXTENSION. Importingmodulesin Python THEN YOU CAN IMpORT THE MODULE IN ANOTHER FILE AND USE THE FUNCTION:
- 5. Examples of Modules 6. json: Enables JSON encoding and decoding. 7.requests: Simplifies sending HTTP requests. 8. re: Supports regular expressions for pattern matching. 9.csv: Facilitates reading and writing CSV files. 10.collections: Offers alternatives to built-in types like dictionaries and lists. 1. mat: Provides mathematical functions. 2. os :Offers a way of using operating system- dependent functionality. 3.sys: Provides access to some variables used or maintained by the Python interpreter. 4. datetime: Allows manipulation of dates and times. 5. random: Implements pseudo-random number generators. .
- 6. What are packages? •A package is a container that contains various functions to perform specific tasks. For example, the math package includes the sqrt() function to perform the square root of a number. •While working on big projects, we have to deal with a large amount of code, and writing everything together in the same file will make our code look messy. Instead, we can separate our code into multiple files by keeping the related code together in packages. •Now, we can use the package whenever we need it in our projects. This way we can also reuse our code.
- 7. CreatingandUsing Packages •Create a new folder named D:MyApp . •Inside MyApp , create a subfolder with the name 'mypackage'. •Create anfunctions.py file in the mypackage folder. •Usinga Python-aware editor like IDLE, create modules greet.py and functions.py with the following code:
- 9. Namespaceand Scope • A namespaceisacollectionofnamesthatrefertoobjects • Pythonhasdifferenttypesofnamespaces,suchasbuilt-in, global, local,and enclosing • Thebuilt-innamespacecontainsthenamesofthebuilt-inobjects,suchasint, str, print,etc. • Theglobalnamespacecontainsthenamesoftheobjectsdefinedatthetoplevelof amodule • Thelocalnamespacecontainsthenamesoftheobjectsdefinedinsideafunctionora class • A scopeistheregionofcodewhereanameisvisibleandcanbeaccessed • Pythonhasfourlevelsofscope:local,enclosing,global, andbuilt-in(LEGB) • Thelocalscopeistheinnermostscopeandcontainsthenamesdefinedin thecurrentfunctionorclass • Theenclosingscopeisthescopeoftheenclosingfunctionorclass,ifany • Theglobalscopeisthescopeofthecurrentmodule
- 10. In conclusion, understanding and harnessing the power of modules and packages in Python is paramount for building scalable, organised, and maintainable code. As we've explored, modules encapsulate code, making it reusable and preventing naming conflicts. Packages take this a step further, providing a structured way to organise modules into a hierarchical directory structure. • Conclusion By adopting modular programming practices, developers can enhance code readability, promote code reuse, and streamline collaboration within projects. As you continue your Python journey, remember the significance of creating well-designed modules and packages, as they form the backbone of robust and efficient software development.
- 11. Thankyou •1. 23BAI11216 Shresth Kumar Jha 2. 23BAI11286 ISHAAN ROY 3. 23BCG10012 ARUNAVA MUKHERJEE 4. 23BCG10054 DEEP NITIN WATH