[Python-Dev] Fuzziness in io module specs - PEP update proposition

[Antoine Pitrou]

Hello,

> *Truncate and file pointer semantics*
[snip]

The major problem here is that you are changing the current semantics.
I don't think the argument you are making for it is strong enough to 
counter-balance the backwards compatibility issue. The situation would be 
different if 3.0 hadn't been released yet.

Besides, we already broke compatibility with 3.0/3.1, let's not give 
users the impression that we don't care about compatibility anymore.

Regards

Antoine.