python如何并列运行两个for循环

如题所述

需要用到多线程
#!/usr/bin/python3

import _thread
import time

# 为线程定义一个函数
def print_time( threadName, delay):
....count = 0
....while count < 5:
........time.sleep(delay)
........count += 1
........print ("%s: %s" % ( threadName, time.ctime(time.time()) ))

# 创建两个线程
try:
...._thread.start_new_thread( print_time, ("Thread-1", 2, ) )
...._thread.start_new_thread( print_time, ("Thread-2", 4, ) )
except:
....print ("Error: 无法启动线程")

while 1:
....time.sleep(5)
....print('is main ')

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