AttributeError: 'module' object has no attribute 'fork'

[Satish ML]

Hi,

Code:
import os, time
def child(pipeout):
    zzz = 0
    while True:
        time.sleep(zzz)
        msg = ('Spam %03d' % zzz).encode()
        os.write(pipeout, msg)
        zzz = (zzz+1) % 5
def parent():
    pipein, pipeout = os.pipe()
    if os.fork() == 0:
        child(pipeout)
    else:
        while True:
            line = os.read(pipein, 32)
            print('Parent %d got [%s] at %s' % (os.getpid(), line, time.time()))
parent()

Output:
Traceback (most recent call last):
  File "C:/Python34/pipe1.py", line 17, in <module>
    parent()
  File "C:/Python34/pipe1.py", line 11, in parent
    if os.fork() == 0:
AttributeError: 'module' object has no attribute 'fork'

Why does this error appear? Module os provides fork(). How to solve this problem? Kindly help.