How to create a process fork in python

Source: Internet
Author: User
This article describes how to use fork to create a process in python. The example analyzes how to use fork to create a process in Python. For more information, see the following example. Share it with you for your reference. The specific analysis is as follows:

#! Coding = utf-8import OS, tracebackimport time ''' fork () system call is a Unix system call that creates a sub-process with its own process, one call, two return, if the return is 0, it is a child process. If the return value is greater than 0, it is the parent process (the return value is the pid of the child process) ''' source = 10i = 0try: print ************************ 'pid = OS. fork () # This will return two times, so the ellipsis below will output two times of print '...... 'If pid = 0: # sub-process print "this is child process" source = source-1 print 'child process source is ', source time. sleep (10) print 'child sleep done' else: # parent process print "this is parent process" print 'parent process source is ', source time. sleep (10) print 'parent sleep done' print sourcefailed T: traceback. print_exc ()

The output is as follows:

***********************......this is child processchild process source is 9......this is parent processparent process source is 10child sleep done9parent sleep done10

I hope this article will help you with Python programming.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.