Tuesday, August 11, 2020

Python os.pipe() Method with example



Hello dear readers! Welcome back to another section of our tutorial on Python. In this tutorial guide, we are going to be studying about the Os pipe() method.

The Python's os pipe() creates a pipe and then returns a pair of file descriptors (r, w) that is usable for reading and writing, respectively.

Syntax

The following below is the syntax for Python Os pipe() method -

os.pipe( )


Parameter Details

  • NA

Return Value

This method  returns a pair of the file descriptors.

Example

The following below is a simple example -

#!/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)

Output
When the above code is executed, it will produce the following result -

The child will write text to a pipe and
the parent will read the text written by child...
Parent reading
Child writing
Child closing
text = Text written by child...

RECOMMENDED POST: Python os.mkdir() Method

Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the Python OS popen() Method.

Feel free to ask your questions where necessary and i will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.

Follow us on our various social media platforms to stay updated with our latest tutorials. You can also subscribe to our newsletter in order to get our tutorials delivered directly to your emails.

Thanks for reading and bye for now.
Share:

0 comments:

Post a Comment

Hello dear readers! Please kindly try your best to make sure your comments comply with our comment policy guidelines. You can visit our comment policy page to view these guidelines which are clearly stated. Thank you.