Why isn't await firing?

Question

Python

There is this code:

async def callee():
    print('Hello')

async def caller():
    await callee()
    print('World')

caller()

The caller function has an await that suspends its execution until the calee function is executed. But after running this script, the console displays the following error message:

(asyncio) [email protected] ~/.MINT18/code/python/asyncio $ python index.py
index.py:8: RuntimeWarning: coroutine 'caller' was never awaited
caller()
RuntimeWarning: Enable tracemalloc to get the object allocation traceback

Which says that the caller function did not wait for caller to execute. Please help me understand the problem and fix the script

Answer 1

asyncio.run(caller())

Answer 2

All coroutines (functions using async/await) must be executed in the eventloop. This is exactly what is indicated in the warning that the eventloop was not launched and the coroutine was not called.
The launch of the coroutine can be done like this:
This call must be made for the main function where all asynchronous calls are located.

Answer 3

Add await to print

Answer 4

I understand you forgot to import the library

import asyncio

async def callee():
    print('Hello')

async def caller():
    await callee()
    print('World')

if __name__ == '__main__':
    asyncio.run(caller())