What are some tips for using mypy with Python typing?

What are some tips for using mypy with Python typing?

Here are some tips for using mypy effectively:

1. Start with type hints on function signatures.
2. Use Optional for nullable types.
3. Leverage Union for multiple type possibilities.
4. Gradually add type hints to your codebase.

How can I handle third-party libraries that don't have type hints?

You can use # type: ignore comments to suppress errors for specific lines or create a .pyi stub file for the library.

What are the benefits of using mypy in a project?

Using mypy helps catch type errors early, improves code readability, and enhances collaboration by making types explicit.

Can you give an example of a type hint in a function?

Sure! Here's a simple example:

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