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2to3

Automated Python 2 to 3 code conversion.

More information.

• 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}

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