Python Coding challenge - Day 730| What is the output of the following Python Code?

 

Code Explanation

1. Importing asyncio

import asyncio

Imports Python’s built-in asyncio module.

asyncio is used for writing concurrent code using the async and await keywords.

2. Defining an Asynchronous Function

async def square(x):

    await asyncio.sleep(0.1)

    return x * x

Declares an async function square that takes an argument x.

await asyncio.sleep(0.1) simulates a delay of 0.1 seconds (like waiting for an API or I/O).

Returns the square of x.

Example:

square(2) will return 4 after 0.1s.

square(3) will return 9 after 0.1s.

3. Main Coroutine

async def main():

    results = await asyncio.gather(square(2), square(3))

    print(sum(results))

Defines another coroutine main.

asyncio.gather(square(2), square(3)):

Runs both coroutines concurrently.

Returns a list of results once both are done.

Here: [4, 9].

sum(results) → 4 + 9 = 13.

Prints 13.

4. Running the Event Loop

asyncio.run(main())

Starts the event loop and runs the main() coroutine until it finishes.

Without this, async code would not execute.

Final Output

13

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