We now have a youtube channel. Subscribe!

Python os.dup() 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 dup() method.

Python os dup() method returns a duplicate of the file descriptor fd which can be used in place of the original descriptor.


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

os.dup( fd );

Parameter Details

  • fd - This is the original file descriptor.

Return Value

This method returns a duplicate of the original file descriptor.


The following below is a simple example -


import os, sys

# Open a file
fd = os.open( "foo.txt", os.O_RDWR|os.O_CREAT )

# Get one duplicate file descriptor
d_fd = os.dup( fd )

# Write one string using duplicate fd
os.write(d_fd, "This is test")

# Close a single opened file
os.closerange( fd, d_fd)

print "Closed all the files successfully!!"

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

Closed all the files successfully!!

Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial, we are going to be studying about the Python OS dup2() 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.

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.
© 2023 ‧ WebDesignTutorialz. All rights reserved. Developed by Jago Desain