Asynchronous For Python(asyncio)

asyncio is a library to write concurrent code using the async/await syntax.asyncio is used as a foundation for multiple Python asynchronous frameworks that provide high-performance network and web-servers, database connection libraries, distributed task queues, etc. asyncio is often a perfect fit for IO-bound and high-level structured network code.

Asynchronous vs Synchronous

Synchronous Hello World! Example:-

def main():


Asynchronous Hello World! Example :

import asyncio

async def main():
    print('Hello ...')
    await asyncio.sleep(1)
    print('... World!')

Asyncio Event Loop:

The event loop is the core of every asyncio application. Event loops run asynchronous tasks and callbacks, perform network IO operations, and run subprocesses.

Async/Await Keywords


Coroutine :

Coroutines are computer program components that generalize subroutines for non-preemptive multitasking, by allowing execution to be suspended and resumed. … According to Donald Knuth, Melvin Conway coined the term coroutine in 1958 when he applied it to the construction of an assembly program.

send() — used to send data to coroutine
close() — to close the coroutine


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