[Python] Python concurrent.futures trying to import functions

So I got 2 .py files and am trying to import the test function from the first to the secon one. But every time I try that I just get a "BrokenProcessPool: A process in the process pool was terminated abruptly while the future was running or pending." Error. I have no idea what Im messing up help is very much appreciated

parallel.py:

import time
from concurrent import futures


def test(t):
time.sleep(t)
print("Ich habe {} Sekunden gewartet. Zeit {:.0f}".format(t, time.time()))



def main():
print("Startzeit: {:.0f}".format(time.time()))
start = time.perf_counter()
with futures.ThreadPoolExecutor(max_workers=3) as ex:
ex.submit(test, 9)
ex.submit(test, 4)
ex.submit(test, 5)
ex.submit(test, 6)

print("Alle Aufgaben gestartet.")

print("Alle Aufgaben erledigt.")

finish = time.perf_counter()

print("Fertig in ",round(finish-start,2)," seconds(s)")



if __name__ == "__main__":
main()



parallel2.py:

import parallel
import time
import concurrent.futures

# =============================================================================
# def test(t):
# time.sleep(t)
# return ("Ich habe {} Sekunden gewartet. Zeit {:.0f}".format(t, time.time()))
# =============================================================================

def main():
print("Startzeit: {:.0f}".format(time.time()))

start = time.perf_counter()

with concurrent.futures.ProcessPoolExecutor() as executor:
f1 = executor.submit(parallel.test, 9)
f2 = executor.submit(parallel.test, 5)
f3 = executor.submit(parallel.test, 4)
f4 = executor.submit(parallel.test, 6)
print(f1.result())
print(f2.result())
print(f3.result())
print(f4.result())

finish = time.perf_counter()

print("Fertig in ",round(finish-start,2)," seconds(s)")

if __name__ =="__main__":
main()

Continue reading...