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Wed Mar 19 23:44:10 CET 2008 · https://mail.python.org/pipermail/python-dev/2008-March/077858.html

On Wed, Mar 19, 2008 at 12:04 PM, David Wolever <wolever at cs.toronto.edu> wrote:
> At the moment, fix_print.py does the Right Thing when it finds ``from
>  __future__ import print_function``... But the 2to3 parser gets upset
>  when print() is passed kwargs:
>  $ cat x.py
>  from __future__ import print_function
>  print("Hello, world!", end=' ')
>  $ 2to3 x.py
>  ...
>  RefactoringTool: Can't parse x.py: ParseError: bad input: type=22,
>  value='=', context=('', (2, 26))
>
>  What would be the best way to start fixing this?
>
>  #2412 is the related bug.

You can pass -p to refactor.py to fix this on a per-run basis. See
r58002 (and the revisions it mentions) for a failed attempt to do this
automatically.

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[Python-Dev] 2to3 and print function