text: #!/usr/bin/python
  
  import os, sys
  
  print ("The child will write text to a pipe and ")
  print ("the parent will read the text written by child...")
  
  # file descriptors r, w for reading and writing
  r, w = os.pipe()
  
  processid = os.fork()
  if processid:
     # This is the parent process
     # Closes file descriptor w
     os.close(w)
     r = os.fdopen(r)
     print ("Parent reading")
     str = r.read()
     print ("text =", str)
     sys.exit(0)
  else:
     # This is the child process
     os.close(r)
     w = os.fdopen(w, 'w')
     print ("Child writing")
     w.write("Text written by child...")
     w.close()
     print ("Child closing")
     sys.exit(0)
  