Python Tutorial: Closures in Python

This method of remembering the values of nonlocal variables even if the variables are no longer in scope or the function is no longer in the current namespace is called Closure.

Requirements of Python closure function
We must meet the following requirements to create a closure function.

1. Define a nested function
2. Return the Nested function
3. The Nested function should access a nonlocal variable.

Advantages of closure in Python
The following are some of the well-known benefits of closure in Python:

1. Avoid the usage of global variables
2. Makes code look elegant
3. Data hiding
4. Preferred more than classes when working with a few number of functions.
5. Rather than implementing classes, implementing closure is more efficient.

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