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():
print("Hello")
main()
print("World")
Asynchronous Hello World! Example :
import asyncio
async def main():
print('Hello ...')
await asyncio.sleep(1)
print('... World!')
asyncio.run(main())
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
Tasks
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
