tldr/pages/common/2to3.md

2to3

Automated Python 2 to 3 code translation. More information: https://docs.python.org/3/library/2to3.html.

• Display changes that would be performed:

2to3 {{path/to/file.py}}

• Convert a Python 2 file to Python 3:

2to3 --write {{path/to/file.py}}

• Convert a specified Python 2 feature to Python 3:

2to3 --write {{file.py}} --fix={{raw_input}} --fix={{print}}

• Convert all features except raw_input the specified ones to Python 3:

2to3 --nofix={{raw_input}} --fix={{print}} example.py

• Display the list of available transformation features:

2to3 --list-fixes

• Convert an entire directory:

2to3 --output-dir={{path/to/code_python3_version}} --write-unchanged-files --nobackups {{path/to/code_python2_version}}