What is lexical scope in Python?

What is lexical scope in Python?

Lexical scope refers to the visibility of variables in nested functions. In Python, a variable defined in an outer function is accessible in its inner functions.

Can you give me an example of lexical scope?

Sure! Here's a simple example:

def outer_function():
    x = 'Hello'
    def inner_function():
        print(x)
    inner_function()

outer_function()  # This will print 'Hello'

What happens if I try to access a variable from an inner function?

If you try to access a variable that is not defined in the inner function or its outer scopes, you'll get a NameError.

How does this differ from global scope?

Global scope allows variables to be accessed from anywhere in the code, while lexical scope restricts access to the defined function and its nested functions.