Convert python 2 code to 3 in PyCharm

Question

I have a large ML project in python 2 code and I just started using PyCharm as an IDE. I'm currently using WinPython 3.4 and I'd preferably like to do everything in python 3 instead of continue using legacy 2. When I cloned the project from git a popup in pycharm came up that was something along the lines of converting the code to 3 from 2 but I didn`t really think about it and exited it. How do I convert it?

Solution 1

I found a way in Pycharm IDE to convert file from v2 to v3 using 2to3 tool.

I applied in pycharm comunity edition v 2016.2.3 in windows environment.

• click terminal in status bar Now, you are in shell command, in the root of your project.
• type the command (to convert myfile.py):

2to3 myfile.py -w

The tool modifies the code of the file, and your IDE is reflected with the changes.

To modify all your files in the folder, type the command

2to3 . -w

The option -w to actually write the changes. For more details write:

2to3 -h

Solution 2

Goto the folder where your python2script.py is existing in command line,

then execute the command:

python C:/python/Tools/scripts/2to3.py -w python2script.py

you can see that your python2scipt.py is updated.

Solution 3

In order to convert your python script from version-2 to version-3, you can simply use 2to3 utility.

On linux terminal -

$ 2to3 my_file.py              # shows output only on terminal

or

$ 2to3 -w my_file.py           # overwrites the file with python-3 code

where my_file.py is the file which you want to convert.

Solution 4

Two methods to convert python 2.X.X to python 3.X.X

1. Using Web-application

I develop a web application to convert python 2.x.x code to python 3.x.x. Here is the Automatic Python 2 to 3 converter.

Note: This web app is FREE and using this 2to3 python library.

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2. Using 2to3 library, Read the doc here.

Install 2to3 library

pip install 2to3 

Convert myfile.py

2to3 myfile.py 

This commends create a new file that contains your Python 3 code.

If you want to overwrite the myfile.py use -w argument like 2to3 myfile.py -w. Read the docs for more arguments.

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