[Python-Dev] Common subset of python 2 and python 3 (original) (raw)

Antoine Pitrou solipsis at pitrou.net
Wed Jan 15 13:35:00 CET 2014

On Wed, 15 Jan 2014 13:22:44 +0100 "Martin v. Löwis" <martin at v.loewis.de> wrote:

Am 12.01.14 18:39, schrieb Nachshon David Armon: >>> I propose that this new version of python use the python 3 unicode model. >>> As the version of python will be fully compatible with both python 2 and >>> with python 3 but NOT necsesarily with all existing code in either. It is >>> designed as a porting tool only.

I don't think that it is possible to write an interpreter that is fully compatible for all it accepts. Would you think that the program print(repr(2**80).endswith("L")) is in the subset that should be supported by both Python 2 and Python 3? Notice that it prints "True" in Python 2 and "False" in Python 3.

We probably need an "asciibool" that is both true and false.

(for some value of "we" ;-))

Regards

Antoine.

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