Python Coding challenge - Day 733| What is the output of the following Python Code?

Code Explanation:

1. Importing the asyncio Module

import asyncio

asyncio is a Python library that allows writing asynchronous code.

It helps run tasks concurrently (not in parallel, but without blocking).

2. Defining an Asynchronous Function

async def double(x):

    await asyncio.sleep(0.05)

    return x * 2

async def declares an asynchronous function.

await asyncio.sleep(0.05) → simulates a small delay (0.05 seconds) to mimic some async task like network I/O.

After waiting, the function returns x * 2.

Example: double(3) → waits, then returns 6.

3. Defining the Main Coroutine

async def main():

    results = await asyncio.gather(double(3), double(4), double(5))

    print(max(results), sum(results))

a) async def main():

Another coroutine that coordinates everything.

b) await asyncio.gather(...)

Runs multiple async tasks concurrently:

double(3) → returns 6 after delay.

double(4) → returns 8 after delay.

double(5) → returns 10 after delay.

asyncio.gather collects results into a list:

results = [6, 8, 10].

c) print(max(results), sum(results))

max(results) → largest number → 10.

sum(results) → 6 + 8 + 10 = 24.

Prints:

10 24

4. Running the Async Program

asyncio.run(main())

This starts the event loop.

Runs the coroutine main().

The program executes until main is finished.

Final Output

10 24

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