19.python设置单线程和多线程

1.单线程实例:

代码如下：from time import ctime,sleep
def music(A):
for i in range(2):
print ("I was listening to %s. %s" % (A, ctime()))
sleep(1)def eat(B):
for i in range(2):
print ("I was eating the %s! %s" % (B, ctime()))
sleep(5)if __name__ == '__main__':
music('一百万种可能')
eat('apple')
print("all over %s" % ctime())

2.多线程实例：

代码如下：from time import ctime,sleep
import threadingdef music(A):
for i in range(2):
print("I was listening to %s. %s" % (A, ctime()))
sleep(1)def eat(B):
for i in range(2):
print("I was eating the %s! %s" % (B,ctime()))
sleep(5)threads = []
th1 = threading.Thread(target=music, args=('That Girl',))
threads.append(th1)
th2 = threading.Thread(target=eat, args=('apple',))
threads.append(th2)if __name__ == '__main__': for thread in threads:
# 设置守护进程
thread.setDaemon(True)
thread.start()
# 等待线程中止，在子线程完成运行之前，这个子线程的父线程将一直被阻塞
thread.join()
print('all over %s' % ctime())