python 的os.getpid（）和os.fork（）函数

import os
import sys
import time

processNmae = 'parent'

print "Program executing ntpid:%d,processNmae:%s"%(os.gitpid(),processNmae)

#attempt to fork child process 
try:
	forkPid = os.fork()
except OSError:
	sys.exit("Unable to create new process.")

# Am I parent process?
if forkPid != 0:
	print "Parent executingn"+"tpid:%d,forkPid:%d,processNmae:%s"%(os.getpid(), forkPID,processName)

# Am I child process?
elif forkPID == 0:
        processName = "child"
        print "Child executingn" + "tpid: %d, forkPID: %d, processName: %s" % (os.getpid(), forkPID,processName)import os
import sys
import time

processNm