What are some examples of type hinting in Python?

What are some examples of type hinting in Python?

Type hinting in Python allows you to specify the expected data types of function arguments and return values. For example:

def greet(name: str) -> str:
    return f'Hello, {name}!'

This function expects a string argument and returns a string.

Can you show me more complex examples?

Sure! Here's a more complex example using lists and dictionaries:

def process_data(data: List[Dict[str, int]]) -> None:
    for item in data:
        print(item)

This function takes a list of dictionaries where each dictionary has string keys and integer values.

What about using type hinting with classes?

Absolutely! Here's an example with a class:

class Person:
    def __init__(self, name: str, age: int) -> None:
        self.name = name
        self.age = age

In this class, the constructor uses type hints for the parameters.

Are there any benefits to using type hinting?

Yes, type hinting improves code readability, helps with static type checking, and can enhance IDE support for better autocompletion.