What is the difference between global and local scope in Python?

What is the difference between global and local scope in Python?

In Python, local scope refers to variables defined within a function, while global scope refers to variables defined outside any function.

Can you give me an example of each?

Sure! A local variable is defined inside a function like this:

def my_function():
    local_var = 5
    print(local_var)

A global variable is defined outside any function:

global_var = 10

def another_function():
    print(global_var)

What happens if I try to access a local variable outside its function?

If you try to access a local variable outside its function, you'll get a NameError because the variable is not defined in that scope.

How can I modify a global variable inside a function?

To modify a global variable inside a function, you need to use the global keyword. For example:

global_var = 10

def modify_global():
    global global_var
    global_var = 20