Commonly-used names in the Python standard library

Marko Rauhamaa marko at
Thu Feb 20 13:09:19 CET 2014

Chris Angelico <rosuav at>:

> Python has a facility like this. It doesn't namespace the keywords,
> but it does let you choose whether to have them or not. In Python 2.5,
> you could type "from __future__ import with_statement" to turn 'with'
> into a keyword. After Python 2.6, it's always a keyword.

That certainly softens the blow but might still cause unnecessary
suffering when maintaining/resurrecting legacy Python code.

How about blocking the introduction of new keywords for ever except if
you specify:

   from __py35__ import syntax

Eventually, every Python module would likely begin with a statement like
that, and it would document the assumption more clearly than __future__.


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