Python 创建线程

导入 _thread模块用来在运行程序中创建一个新线程的 start_new_thread() 函数。

语法

_thread.start_new_thread ( function, args[, kwargs] )

此函数启动一个新线程并返回其标识符。

参数

• function −新创建的线程开始运行并调用指定的函数。如果函数需要参数，则可将其作为参数args和kwargs传递。

示例

import _thread
import time
# Define a function for the thread
def thread_task( threadName, delay):
   for count in range(1, 6):
      time.sleep(delay)
      print ("Thread name: {} Count: {}".format ( threadName, count ))

# Create two threads as follows
try:
   _thread.start_new_thread( thread_task, ("Thread-1", 2, ) )
   _thread.start_new_thread( thread_task, ("Thread-2", 4, ) )
except:
   print ("Error: unable to start thread")

while True:
   pass

它将产生以下 输出 −

Thread name: Thread-1 Count: 1
Thread name: Thread-2 Count: 1
Thread name: Thread-1 Count: 2
Thread name: Thread-1 Count: 3
Thread name: Thread-2 Count: 2
Thread name: Thread-1 Count: 4
Thread name: Thread-1 Count: 5
Thread name: Thread-2 Count: 3
Thread name: Thread-2 Count: 4
Thread name: Thread-2 Count: 5
Traceback (most recent call last):
 File "C:\Users\user\example.py", line 17, in <module>
  while True:
KeyboardInterrupt

程序进入无限循环。您需要按下 “ctrl-c” 来停止。