mport _thread as thread
import time
def loop1(in1):
  print("Start loop 1 at:", time.ctime())
print("我是參數(shù)", in1)
time.sleep(4)
print("End loop 1 at:", time.ctime())
​
def loop2(in1, in2):
  print("Start loop 2 at:", time.ctime())
print("我是參數(shù)", in1, "和參數(shù) ", in2)
time.sleep(4)
print("End loop 2 at:", time.ctime())
​
import threading
def main1():
  print("Starting at:", time.ctime())
t1 = threading.Thread(target = loop1, args = ('', ))
t1.setName("THR_1")# 給線程重命名
t1.start()
​
t2 = threading.Thread(target = loop2, args = ('', ''))
t2.setName("THR_2")
t2.setDaemon(True)# 主線程運(yùn)行完了就完了， 不用等線程2
t2.start()
​
time.sleep(3)# 三秒后兩個(gè)子線程仍然在運(yùn)行著， 因?yàn)樗麄兝锩嬗幸粋€(gè)四秒在停著
for thr in threading.enumerate(): #返回的是正在運(yùn)行的子線程的列表
print("正在運(yùn)行的子線程名為：{0}".format(thr.getName()))# 讀取了該線程的名字
​
print("正在運(yùn)行的子線程數(shù)量為：{0}".format(threading.activeCount()))# 打印出了線程的數(shù)量， 包括主線程和兩個(gè)子線程一共3個(gè)線程
t1.join()# 等線程1運(yùn)行完了再接著向下運(yùn)行
print("ALL done at :", time.ctime())
​
if __name__ == "__main__":
  main1()

class MyThread(threading.Thread): #定義一個(gè)Thread的子類
def __init__(self, args): #重寫__init__函數(shù)， 其中參數(shù)為self和新引入的參數(shù)
super(MyThread, self).__init__()# 固定格式， 繼承父類的__init__函數(shù)
self.args = args
​
def run(self):
  time.sleep(1)
print("The args for this class is {0}".format(self.args))
​
for i in range(5):
  t = MyThread(i)
t.start()
t.join()