The asyncio module
As you saw in the previous chapter, the asyncio module provides an easy way to convert a sequential program to an asynchronous one. In this section, we will be discussing the general structure of an asynchronous program, and subsequently, how to implement the conversion from a sequential to an asynchronous program in Python.
Coroutines, event loops, and futures
There are a few common elements that most asynchronous programs have, and coroutines, event loops, and futures are three of those elements. They are defined as follows:
- Event loops are the main coordinators of tasks in an asynchronous program. An event loop keeps track of all of the tasks that are to be run asynchronously, and decides which of those tasks should be executed at a given moment. In other words, event loops handle the task switching aspect (or the execution flow) of asynchronous programming.
- Coroutines are a special type of function that wrap around specific tasks, so that they can be executed asynchronously...
