Automate the Conversion from Python2 to Python3

We can convert Python2 scripts to Python3 scripts by using 2to3 module. It changes Python2 syntax to Python3 syntax. We can change all the files in a particular folder from python2 to python3.


This module does not come built-in with Python. To install this type the below command in the terminal.

pip install 2to3


2to3 [file or folder] -w

If we want to change all files in the currently open folder and all the files in the subfolder from Python2 to Python3 type the below command.


If we want to change a particular file in the current folder from Python2 to Python3 then enter the following command.

2to3 -w

Example: Consider a simple Python2 file.


To convert this file from Python2 to Python3 open the terminal in the directory containing the file and type the below command.


The Python file will now be converted to Python3. Let’s see the file.


My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using or mail your article to See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.

Article Tags :

Be the First to upvote.

Please write to us at to report any issue with the above content.