Python Coding challenge - Day 738| What is the output of the following Python Code?

 

Code Explanation:

1. Importing the Module

import asyncio

Imports Python’s built-in asyncio library.

It is used for writing asynchronous code (code that runs concurrently without blocking execution).

2. Defining an Asynchronous Function

async def double(x):

    await asyncio.sleep(0.05)

    return x * 2

async def double(x): → Defines an asynchronous function named double.

await asyncio.sleep(0.05) → Pauses execution for 0.05 seconds without blocking other tasks.

return x * 2 → After waiting, it returns the doubled value of x.

3. Defining the Main Asynchronous Function

async def main():

    results = await asyncio.gather(double(2), double(3), double(4))

    print(sum(results))

async def main(): → Another asynchronous function called main.

await asyncio.gather(...):

Runs multiple async tasks concurrently (double(2), double(3), double(4)).

Collects their results into a list: [4, 6, 8].

print(sum(results)):

Calculates the sum of [4, 6, 8] → 18.

4. Running the Asynchronous Program

asyncio.run(main())

Starts the event loop.

Executes main() until completion.

Ensures all asynchronous tasks inside are executed.

Final Output

18

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