2to3

Automated Python 2 to 3 code translation.

Display the changes that would be performed without performing them (dry-run)

$ 2to3 [path/to/file.py]

Convert a Python 2 file to Python 3

$ 2to3 --write [path/to/file.py]

Convert specific Python 2 language features to Python 3

$ 2to3 --write [path/to/file.py] --fix=[raw_input] --fix=[print]

Convert all Python 2 language features except the specified ones to Python 3

$ 2to3 --write [path/to/file.py] --nofix=[has_key] --nofix=[isinstance]

Display a list of all available language features that can be converted from Python 2 to Python 3

$ 2to3 --list-fixes

Convert all Python 2 files in a directory to Python 3

$ 2to3 --output-dir=[path/to/python3_directory] --write-unchanged-files --nobackups [path/to/python2_directory]

Run 2to3 with multiple threads

$ 2to3 --processes=[4] --output-dir=[path/to/python3_directory] --write --nobackups --no-diff [path/to/python2_directory]

2to3 [options] file|dir ...