What is variable scope in Python?

Variable scope in Python refers to the region of the code where a variable is accessible. Variables can have different scopes, such as local, global, or nonlocal, which determine where they can be used.

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

my_function()
print(x)  # This will raise an error because x is not accessible outside the function

In this example, the variable x is defined within a function, making it a local variable. It cannot be accessed outside of that function. Global variables, on the other hand, are accessible throughout the entire program.

Understanding variable scope is crucial for managing data in your programs and avoiding issues such as variable shadowing and unintended modifications.