Python concurrent.futures.ProcessPoolExecutor

[Rob Rosengard]

Warning:  I am new to this group
Warning:  I am not an expert at Python, I've written a few small programs, and spend 20 hours of online classes, and maybe a book or two. 
Warning:  I am new to trying to use concurrent.futures.ProcessPoolExecutor
- Prior to writing this question I updated to Python 3.9 and PyCharm 2020.3.  And confirmed the problem still exists. 
- Running on Windows 10 Professional
- I've been trying to run a simple piece of code to exactly match what I have seen done in various training videos.  By I am getting a different and 
unexpected set of results.  I.e. the instructor got different results than I did on my computer.  My code is very simple:

import concurrent.futures
import time


start = time.perf_counter()


def task(myarg):
    print(f'Sleeping one second...{myarg}')
    time.sleep(1)
    return 'Done sleeping...'


if __name__ == '__main__':
    with concurrent.futures.ProcessPoolExecutor() as executor:
        future1 = executor.submit(task, 1)
        future2 = executor.submit(task, 2)
finish = time.perf_counter()
print(f'Finished in {round(finish-start,2)} seconds')

And the output is: 
Finished in 0.0 seconds
Finished in 0.0 seconds
Sleeping one second...1
Sleeping one second...2
Finished in 1.14 seconds

Process finished with exit code 0

--- 
QUESTIONS and CONCERNS that I have...
It seems that both calls to task not only runs that function, but then keeps executing the rest of the main line code.  I only expected it to run the function and then immediately quit/disappear.   That is, I expect the output to look like (i.e. not having the three lines of "Finished in x.x seconds", rather, just one line like that):
Sleeping one second...1
Sleeping one second...2
Finished in 1.14 seconds

Goal:  I need the executor tasks to only run that one function, and then completely go away and stop.  Not keep executing more code that doesn't belong to the task function. 

I've tried many iterations of this issue, and placed PRINT statements all over to try to track what is going on.  And I used if/else statements in the main code, which caused even more problems.  I.e. both the IF and the ELSE was executed each time through the code. Which completely blows my mind. 

Any thoughts on this?  Thanks for your time and help!  

R