python thread example, python thread ornegi

thread_ornek.py

from threading import Thread
import time
from random import randint


# Uc fonksiyon, uzun calisma icin sleep kullandik.
# her biri ayri bir thread olarak calisip, en uzun sure calisan bitince sonuclari yazacaktir.
def func1(a,b, result, idx):
    sleepsec = randint(5,10)
    print("func1, sleeping ", sleepsec)
    time.sleep(sleepsec)
    result[idx] = a+b
    print("func1  finished, value ", a+b)
    

def func2(a,b, result, idx):
    sleepsec = randint(5,10)
    print("func2, sleeping ", sleepsec)
    time.sleep(sleepsec)
    result[idx] = a * b
    print("func2  finished, value ", a*b)

def func3(a,b,c, result, idx):
    sleepsec = randint(5,10)
    print("func3, sleeping ", sleepsec)
    time.sleep(sleepsec)
    result[idx] = a - b + c
    print("func3  finished, value ", a-b+c)

if __name__ == "__main__":
    a = 10
    b = 8
    c = 4
    
    threads = []   # fonksiyonlar thread seklinde bu diziye doldurulacaklar.
    results = [None] *3  # sonuclari buraya dolduracagiz
    threads.append(Thread(target=func1, args=(a,b,results,0,)))
    # sonuclarin doldurulacagi dizi ve hangi indekse cevabi yazacagi parametre olarak veriliyor.
    threads.append(Thread(target=func2, args=(a,b,results,1,)))
    threads.append(Thread(target=func3, args=(a,b,c,results,2,)))                   

    #threadleri baslat
    for t in threads:
        t.start()

    #hepsinin sonlanmasini beklemesini sagla
    for t in threads:
        t.join()

    #bu satira butun threadler bitince gelebilecek, sonuclari yaz
    for r in results:
        print(r)