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Python-Modernize — modernize 0.6.1 documentation

This library is a very thin wrapper around lib2to3 to utilize it to make Python 2 code more modern with the intention of eventually porting it over to Python 3.

The python-modernize command works like 2to3. Here’s how you’d rewrite a single file:

python-modernize -w example.py

See the LICENSE file for the license of python-modernize. Using this tool does not affect licensing of the modernized code.

The project website can be found on GitHub and the PyPI project name is modernize

• By default modernize does not change Unicode literals at all, which means that you can take advantage of PEP 414. This is the simplest option if you only want to support Python 3.3 and above along with Python 2.
• Alternatively, there is the --six-unicode flag which will wrap Unicode literals with the six helper function six.u() using the libmodernize.fixes.fix_unicode fixer. This is useful if you want to support Python 3.1 and Python 3.2 without bigger changes.
• The last alternative is the --future-unicode flag which imports the unicode_literals from the __future__ module using the libmodernize.fixes.fix_unicode_future fixer. This requires Python 2.6 and later, and will require that you mark bytestrings with b'' and native strings in str('') or something similar that survives the transformation.

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