Using asyncio for Non-async Functions in Python?

Question

Suppose there is a library that makes various database queries:

import time

def queryFoo():
    time.sleep(4)
    return \"foo\"

def queryBar():
    time.s         


        

Answer 1

I presume you are after concurrency and hopefully do not insist on using asyncio module itself in which case this little example could be helpful:

import asyncio
import time
from concurrent.futures import ThreadPoolExecutor

def queryFoo():
    time.sleep(2)
    return "FOO"

def queryBar():
    time.sleep(4)
    return "BAR"

with ThreadPoolExecutor(max_workers=2) as executor:
    foo = executor.submit(queryFoo)
    bar = executor.submit(queryBar)
    results = [foo.result(), bar.result()]

print(results)

It runs both queryFoo() and queryBar() in parallel and collects their results in a list in order in which they've been mentioned in an assignment to results.