What is type checking in Python?

What is type checking in Python?

Type checking in Python refers to the process of verifying the type of a variable at runtime. Python is dynamically typed, meaning you don't have to declare variable types explicitly, but type checking helps catch errors.

How does type checking differ from type hinting?

Type checking is the actual verification of types during execution, while type hinting is a way to indicate the expected type of a variable in your code, which can help with readability and static analysis.

Can you give me an example of type checking in Python?

Sure! Here's a simple example:

def add_numbers(a: int, b: int) -> int:
    return a + b

result = add_numbers(5, 10)  # This works
result = add_numbers(5, '10')  # This will raise a TypeError at runtime