Python 201 - Interactively Learn Advanced Concepts in Python 3/

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nonlocal Scope

nonlocal Scope

Let's briefly understand the nonlocal scope in python.

We'll cover the following...

Python 3 added a new keyword called nonlocal. The nonlocal keyword adds a scope override to the inner scope. We can read all about it in PEP 3104. This is best illustrated with a couple of code examples. One of the most common examples is to create function that can increment:

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def counter():
    num = 0
    def incrementer():
        num += 1
        return num
    return incrementer

If we try ...