0ralo

from time import sleep
from threading import Thread


def first():
    sleep(3)
    print(2)


def second():
    sleep(3)
    print(1)
    

def main():
    Thread(target=first).start()
    Thread(target=second).start()
    print("Продолжаем")


main()

PS D:\Dropbox\Develop\all_tests> python threads.py
Продолжаем
1
2