Python学习之路：进程、线程、协程篇

参考链接：http://www.cnblogs.com/alex3714/articles/5230609.html

import threading,time

def run(n):
    print("task",n)
    time.sleep(2)
    print("task done",n)

start_time = time.time()
t_objs =  []
for i in range(50):
    t = threading.Thread(target=run,args=("t-%s"%i,))
    t.start()
    t_objs.append(t)

for t in t_objs:
    t.join()

print("------all threads has finished....")
print("cost:",time.time()-start_time)

    # t1 = threading.Thread(target=run,args=("t1",))
    # t2 = threading.Thread(target=run,args=("t2",))
    # t1.start()
    # t2.start()

# run("t1")
# run("t2")