import threading
import time

def saySorry():
  print("亲爱的，我错了，我能吃饭了吗？")
  time.sleep(1)

if __name__ == "__main__":
  for i in range(5):
    t = threading.Thread(target=saySorry)
    t.start() #启动线程，即让线程开始执行

import threading
from time import sleep,ctime

def sing():
  for i in range(3):
    print("正在唱歌...%d"%i)
    sleep(1)

def dance():
  for i in range(3):
    print("正在跳舞...%d"%i)
    sleep(1)

if __name__ == '__main__':
  print('---开始---:%s'%ctime())

  t1 = threading.Thread(target=sing)
  t2 = threading.Thread(target=dance)

  t1.start()
  t2.start()

  #sleep(5) # 屏蔽此行代码，试试看，程序是否会立马结束？
  print('---结束---:%s'%ctime())

import threading
from time import sleep,ctime

def sing():
  for i in range(3):
    print("正在唱歌...%d"%i)
    sleep(1)

def dance():
  for i in range(3):
    print("正在跳舞...%d"%i)
    sleep(1)

if __name__ == '__main__':
  print('---开始---:%s'%ctime())

  t1 = threading.Thread(target=sing)
  t2 = threading.Thread(target=dance)

  t1.start()
  t2.start()

  while True:
    length = len(threading.enumerate())
    print('当前运行的线程数为：%d'%length)
    if length<=1:
      break

    sleep(0.5)

import socket
import threading
import time

def sing():
  for i in range(10):
    print("------------------------------")
    time.sleep(0.5)
    
def dance():
  for i in range(10):
    print("-----")
    time.sleep(0.5)

if __name__ == '__main__':
  # 创建两个子线程
  t1 = threading.Thread(target=sing)
  t2 = threading.Thread(target=dance)
  # 启动子线程
  t1.start()
  t2.start()

import threading
import time

def test():
  for i in range(10):
    print("test is run:", i)
    time.sleep(1)

if __name__ == '__main__':
  # 创建子线程
  t1 = threading.Thread(target=test)
  # 启动子线程
  t1.start()
  # 休眠2秒
  time.sleep(2)
  print("我 OVER 了")
  # 退出
  exit()