mirror of https://github.com/CrimsonTome/tldr.git
2to3: update grammar and examples (#5431)
Fixed some glaring mistakes in grammar and added a new example.manned-org
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# 2to3
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# 2to3
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> Automated Python 2 to 3 code translation.
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> Automated Python 2 to 3 code conversion.
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> More information: <https://docs.python.org/3/library/2to3.html>.
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> More information: <https://docs.python.org/3/library/2to3.html>.
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- Display changes that would be performed:
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- Display the changes that would be performed without performing them (dry-run):
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`2to3 {{path/to/file.py}}`
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`2to3 {{path/to/file.py}}`
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@ -11,18 +11,22 @@
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`2to3 --write {{path/to/file.py}}`
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`2to3 --write {{path/to/file.py}}`
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- Convert a specified Python 2 feature to Python 3:
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- Convert specific Python 2 language features to Python 3:
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`2to3 --write {{file.py}} --fix={{raw_input}} --fix={{print}}`
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`2to3 --write {{path/to/file.py}} --fix={{raw_input}} --fix={{print}}`
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- Convert all features except *raw_input* the specified ones to Python 3:
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- Convert all Python 2 language features except the specified ones to Python 3:
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`2to3 --nofix={{raw_input}} --fix={{print}} example.py`
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`2to3 --write {{path/to/file.py}} --nofix={{has_key}} --nofix={{isinstance}}`
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- Display the list of available transformation features:
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- Display a list of all available language features that can be converted from Python 2 to Python 3:
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`2to3 --list-fixes`
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`2to3 --list-fixes`
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- Convert an entire directory:
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- Convert all Python 2 files in a directory to Python 3:
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`2to3 --output-dir={{path/to/code_python3_version}} --write-unchanged-files --nobackups {{path/to/code_python2_version}}`
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`2to3 --output-dir={{path/to/python3_directory}} --write-unchanged-files --nobackups {{path/to/python2_directory}}`
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- Run 2to3 with multiple threads:
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`2to3 --processes={{4}} --output-dir={{path/to/python3_directory}} --write --nobackups --no-diff {{path/to/python2_directory}}`
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