python package vs module vs library
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Python is a versatile programming language that supports modular programming through packages, modules, and libraries. Understanding the differences between these terms is crucial for writing clean, organized, and scalable code. In this tutorial, we'll explore what packages, modules, and libraries are, and provide code examples to illustrate each concept.
A Python module is a single file containing Python code that defines functions, classes, and variables. Modules are used to organize code into reusable and logically grouped components. They can be imported into other Python scripts or modules using the import statement.
Let's create a simple module named math_operations.py:
Now, let's use this module in another Python script:
In Python, a library is a collection of modules. Libraries provide pre-written functionality that can be reused in different projects. A famous example is the math library, which contains various mathematical functions.
Libraries are often installed using package managers like pip. You can install a library by running:
A package is a way of organizing related modules into a directory hierarchy. It includes an __init__.py file, indicating that the directory should be treated as a package. Packages allow for a more organized structure when dealing with larger projects.
Let's create a package named shapes:
The circle.py module inside the shapes package:
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