What are some examples of mypy annotations?

Can you give me some examples of mypy annotations?

Sure! Mypy annotations are used to specify types in Python. For example, you can annotate a function like this:

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

What about using lists and dictionaries?

Great question! You can annotate lists and dictionaries like this:

from typing import List, Dict

def process_items(items: List[int]) -> Dict[str, int]:
    return {'count': len(items), 'sum': sum(items)}

Can I use mypy with classes?

Absolutely! You can annotate class attributes and methods. Here's an example:

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