Python, for all its power and popularity, has long lacked a form of flow control found in other languages—a way to take a value and match it elegantly against one of a number of possible conditions.

The asyncio library included with Python gives you the tools to use async for processing disk ... a Python program should have only one .run() statement, just as a Python program should have ...

You simply do so because that makes it easier to understand the programming logic when ... you need to indent Python statements properly, or your program won’t run. You can use tabs or spaces ...