Asyncio library is introduced in python 3.4 to execute single-threaded concurrent programs. This library is popular than other libraries and frameworks for its impressive speed and various use. This library is used in python to create, execute and structure coroutines and handle multiple tasks concurrently without doing the tasks in parallel. The major parts of this library are defined below:
Coroutine: The part of code that can be paused and resumed in multi-threaded script is called coroutine. coroutines work cooperatively in multi-threaded program. When one coroutine pauses then other coroutine can execute.
Event loop: It is used to start the execution of coroutines and handle input/output operations. It takes multiple tasks and complete them.
Task: The execution and the result of coroutines are defined by the tasks. You can assign multiple number of tasks using asyncio library and run the tasks asynchronously.
Future: It acts as a future storage where the result of coroutines will store after completion. This is useful when any coroutine requires to wait for the result of other coroutine.
How you can implement the above concepts of asyncio library is shown in this tutorial by using some simple examples at the source.
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