Original Translation
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2to3 will usually be installed with the Python interpreter as a script. It is also located in the :file:`Tools/scripts` directory of the Python root.
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2to3's basic arguments are a list of files or directories to transform. The directories are to recursively traversed for Python sources.
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Here is a sample Python 2.x source file, :file:`example.py`::
Voici un exemple de fichier source Python 2.x, :file:`example.py`::
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def greet(name): print "Hello, {0}!".format(name) print "What's your name?" name = raw_input() greet(name)
def greet(name): print "Bonjour, {0}!".format(name) print "Quel est ton nom ?" name = raw_input() greet(name)
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It can be converted to Python 3.x code via 2to3 on the command line::
Il peut être converti en Python 3.x via la commande 2to3::
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$ 2to3 example.py
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A diff against the original source file is printed. 2to3 can also write the needed modifications right back to the source file. (A backup of the original file is made unless :option:`-n` is also given.) Writing the changes back is enabled with the :option:`-w` flag::
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$ 2to3 -w example.py
$ 2to3 -w example.py
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After transformation, :file:`example.py` looks like this::
Après transformation,: file:`exemple.py` ressemble à ceci::
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def greet(name): print("Hello, {0}!".format(name)) print("What's your name?") name = input() greet(name)
def greet(name): print("Bonjour, {0}!".format(name)) print("Quel est ton nom ?") name = input() greet(name)