What are variables and scope in Python?

What are variables and scope in Python?

In Python, a variable is a name that refers to a value. Scope refers to the visibility of variables in different parts of your code.

Can you explain the different types of scope?

Sure! There are four types of scope in Python: local, enclosing, global, and built-in. Local scope is within a function, enclosing is in nested functions, global is at the module level, and built-in is provided by Python.

How do I declare a global variable?

You can declare a global variable by using the global keyword inside a function. For example:

x = 10

def my_function():
    global x
    x = 20

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

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