What are local and global scopes in Python?

Can you explain what local and global scopes are in Python?

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

Can you give me an example of each?

Of course! For a local scope, consider a variable defined inside a function:

def my_function():
    local_var = 10  # This is a local variable
    print(local_var)

For a global scope, you might have:

global_var = 20  # This is a global variable

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 global_var
global_var = 30  # Now you can modify it