python进程&线程

来源：互联网发布：tensorflow有趣的项目编辑：程序博客网时间：2024/05/16 11:28
# -*- coding:UTF-8 -*-'''Created on 2015年10月25日@author: young'''import osimport threadingimport timeprint '多进程创建'print 'Process (%s) start...' % os.getpid()s=1111;pid = os.fork()if pid==0:    s=222    print 'I am child process (%s) and my parent is %s.' % (os.getpid(), os.getppid())         else:    s=333    print 'I (%s) just created a child process (%s).' % (os.getpid(), pid)        print sprint '创建跨平台的多进程'from multiprocessing import Processimport os #子进程要执行的代码'def run_proc(name):    print 'Run child process %s (%s)...' % (name, os.getpid())print 'Parent process %s.' % os.getpid()p = Process(target=run_proc, args=('test',))print 'Process will start.'p.start()p.join()print 'Process end.'            print '###########多线程#################'def task():    print "%s is running "% (threading.current_thread().name,)     for i in range(5):        print "%s --> %d"%(threading.current_thread().name,i)                time.sleep(1)#暂停1秒            print "%s end..." % (threading.current_thread().name,)     print "%s is running "% (threading.current_thread().name,) th=threading.Thread(target=task,name="new thread")th.start()th.join()#加入到主线程中，等子线程结束后再结束主线程print "%s end..." % (threading.current_thread().name,)print '###################'
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