What is variable scope in Python?

What is variable scope in Python?

Variable scope refers to the visibility and lifetime of a variable in a program. In Python, it determines where a variable can be accessed.

Can you explain the different types of scopes?

Sure! In Python, there are four types of scopes: local, enclosing, global, and built-in. Local scope is for variables defined within a function, enclosing is for variables in nested functions, global is for variables defined at the top level of a module, and built-in is for names preassigned in the built-in namespace.

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

If you try to access a variable outside its scope, Python will raise a NameError, indicating that the variable is not defined.

Can you give an example of local and global scope?

Certainly! Here's a simple example:

x = 10  # Global variable

def my_function():
    y = 5  # Local variable
    print(x + y)  # Accessing global variable

my_function()  # Outputs: 15
print(y)  # Raises NameError