What are the differences in variable scope in Python?

What are the differences in variable scope in Python?

In Python, variable scope refers to the visibility of variables in different parts of your code. There are four main types: local, enclosing, global, and built-in.

Can you explain local and global scope with examples?

Sure! A local variable is defined within a function and can only be accessed inside that function. For example:

def my_function():
    x = 10  # local variable
    print(x)
my_function()  # prints 10
print(x)  # raises NameError

A global variable is defined outside any function and can be accessed anywhere in the code:

y = 20  # global variable

def another_function():
    print(y)  # prints 20
another_function()

What about enclosing scope?

Enclosing scope refers to variables in the local scope of an enclosing function. For example:

def outer_function():
    z = 30  # enclosing variable
    def inner_function():
        print(z)  # accesses enclosing variable
    inner_function()
outer_function()  # prints 30

Thanks! What are built-in variables?

Built-in variables are predefined in Python and can be accessed anywhere in your code. Examples include len(), print(), and range().