Async-Await in Python
Learn the concept of async-await and implement it in Python using asyncio.
We'll cover the following
Asyncio
module in python
The asynchronous way of programming is very popular in javascript
. In NodeJS
, you have the in-built support of implementing async functionality. In Python, building async applications is now supported by using the asyncio
package. The asyncio
is a style of concurrent programming, but it is not parallelism. It is more closely aligned with threading than with multiprocessing but is very much distinct from both of these. asyncio
uses cooperative multitasking.
Wikipedia gives the following definition of cooperative multitasking:
Cooperative multitasking, also known as non-preemptive multitasking, is a style of computer multitasking in which the operating system never initiates a context switch from a running process to another process. Instead, processes voluntarily yield control periodically or when idle in order to enable multiple applications to be run simultaneously. This type of multitasking is called “cooperative” because all programs must cooperate for the entire scheduling scheme to work.
async
keyword
The async
keyword is put in front of a function declaration to turn it into an asynchronous function. An asynchronous function is a function that knows how to expect the possibility of the await
keyword being used to invoke asynchronous code.
Let’s learn the difference between a synchronous function and an asynchronous function.
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