Thread test

import threading
from time import time

thread_count = 2

class tthread (threading.Thread):
    def run (self):
        sum = 0
        for i in range (0, 1000000):
            sum = sum + i
        return sum

threads = []

for i in range (0, thread_count):
    t = tthread ()
    threads.append (t)
    threads [-1].start ()

print ("Spawned and run")

stime = time ()
cdone = 0
for t in threads:
    t.join ()
    ++cdone
    perc = (cdone / thread_count) * 100
    print (perc, "%")


etime = time () - stime
print (etime, " seconds")
print ("Done")