2018.1.15python-24-多线程

#!/usr/bin/python
import time
#利用time函数，
import _thread as thread
# print ("time.time(): %s " %time.time())
# print (time.localtime( time.time() ))
# print (time.asctime( time.localtime(time.time()) ))
def loop1():
    print("start loop 1 at :",time.ctime())
    time.sleep(4)
    print("end loop 1 at: ",time.ctime())
def loop2():
    print("start loop 2 at :",time.ctime())
    time.sleep(2)
    print("end loop 2 at: ",time.ctime())
def main():
    print("strting at:", time.ctime())
    thread.start_new_thread(loop1,())
    thread.start_new_thread(loop2,())

    print("all done at :", time.ctime())



if __name__ == '__main__':
    main()
    while True:
        time.sleep(1)

• 案例1：顺序执行，耗时比较长

• 案例2：改用多线程，缩短总时间，使用＿thread

• 案例3:多线程传参数

  import time

  import _thread as thread

 案例3:多线程传参数

def loop1(in1):
    print("start loop 1 at :",time.ctime())
    print("in1",in1)
    time.sleep(4)
    print("end loop 1 at: ",time.ctime())
def loop2(in1,in2):
    print("in1:",in1,"in2:",in2)
    print("start loop 2 at :",time.ctime())
    time.sleep(2)
    print("end loop 2 at: ",time.ctime())
def main():
    print("strting at:", time.ctime())
    thread.start_new_thread(loop1,("hello world",))
    thread.start_new_thread(loop2,("hello world","hello world2"))

    print("all done at :", time.ctime())

if __name__ == '__main__':
    main()
    while True:
        time.sleep(1)