explain namespace in python

In Python, a namespace is a container that holds a collection of identifiers (such as variables, functions, classes, etc.) and their corresponding objects. Namespaces help in organizing and managing the names used in a Python program, preventing naming conflicts and providing a way to uniquely identify objects.
There are three main types of namespaces in Python:
Local Namespace: It contains local names inside a function or method. This namespace is created when the function is called and is destroyed when the function exits.
Global Namespace: It contains names at the module level. It is created when the module is imported and lasts until the interpreter quits.
Built-in Namespace: It contains built-in names like print, len, etc. These names are always available and form the Python built-in functions.
Let's explore these namespaces with code examples.
In this example, local_variable exists only within the example_function scope. Trying to access it outside the function will result in an error.
Here, global_variable is defined at the module level, making it accessible both inside and outside the function.
In this snippet, we demonstrate the use of some built-in functions and show that, while it's possible to override them, it is not recommended.
Understanding namespaces is crucial for writing clean and maintainable code. It helps prevent naming conflicts and enhances code readability by organizing identifiers based on their scope and purpose.
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