Nick Coghlan wrote:
M.-A. Lemburg wrote:
Nick Coghlan wrote:
I also would really like to see a real port of the bytes class to 2.6, but I have a vague memory that there was some reason that wouldn't work. Not so much that it wouldn't work, but that the interfaces to support using it effectively really aren't there - lots of areas in the standard
Lennart Regebro wrote: library needed to be tweaked to cope with bytes objects in 3.x.
Generally speaking, the "bytes = str" trick represents a reasonable compromise as the APIs that you would pass a bytes object to in 3.x expect an 8-bit str instance in 2.x.
Could you please add such hints, tricks and tips to the wiki page:
Done (although the task of figuring out how to get the wiki to display code properly defeated me... the normal Python documentation syntax for it seemed to give the wiki's ReST interpreter fits).
Thanks.
I also mentioned the trick someone mentioned about "from __future__ import unicode_literals" not changing the meaning of 'str' since it only alters the parser but not the builtins.
In writing it up, it occurred to me that having that kind of thing in a "py3_compat" compatibility module (to be used as, e.g., "from py3_compat import str, bytes") would not only make it easier to use in multiple modules, but also easier for 2to3 to remove when forward porting.
That would certainly be useful to have, yes, since all developers wanting to support both 2.7 and 3.2 using the same code base will have a need for these things. It would also help to have a package that contains proxy modules using the Python 3.x module/package names which map the functionality back to the Python 2.x modules. This avoids problems with freezing tools that scan the source code for imports as well as pickles which store the full dotted path name to classes. -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Nov 05 2009)
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