How do type hints work in async functions in Python 3.10?

How do type hints work in async functions in Python 3.10?

In Python 3.10, type hints in async functions work similarly to regular functions. You can specify the expected types of parameters and return values using the -> syntax.

Can you give me an example of an async function with type hints?

Sure! Here's an example:

import asyncio

async def fetch_data(url: str) -> dict:
    # Simulate a network call
    await asyncio.sleep(1)
    return {'url': url, 'data': 'sample data'}

What are the benefits of using type hints in async functions?

Type hints improve code readability, help with static type checking, and provide better documentation for your async functions.

Are there any limitations to using type hints in async functions?

One limitation is that type hints are not enforced at runtime, so they won't prevent type errors during execution. They are mainly for development and tooling.