Basic use of python Multithreading

There are two ways to implement multithreading in python: one is to generate new threads through functions, and the other is to implement multithreading through object-oriented methods.

Call the start_new_thread () function in the thread module to generate a new thread.

 

#! /Usr/bin/env python # encoding: UTF-8 # author: zhxiaimport threadimport timethread_count = 0; def test (num, interval): for x in xrange ): print 'current thread is: % d, and x is: % d' % (num, x) time. sleep (interval) thread. exit_thread () if _ name __= = '_ main _': thread. start_new_thread (test, (1, 1) thread. start_new_thread (test, (2, 1) thread. start_new_thread (test, (3, 1) # To prevent the main thread from exiting before the sub-thread, you need to check the current number of sub-threads until all sub-threads have completed execution. sleep (0.001) # sleep is required. Otherwise, the number of sub-threads cannot be obtained. _ count ()> 0: time. sleep (0.5)

 

Implemented through the threading module:

#!/usr/bin/env python#encoding:utf-8#author:zhxiaimport timeimport threadingimport sysclass test(threading.Thread):        def __init__(self,num,interval):                threading.Thread.__init__(self)                self.thread_num=num                self.interval=interval        def run(self):                for x in xrange(1,9):                        print 'current thread is %d,and x is %d'%(self.thread_num,x)                        time.sleep(self.interval)if __name__=='__main__':        t1=test(1,1)        t2=test(2,1)        t3=test(3,1)        t1.start();        t2.start();        t3.start();