[Baypiggies] [Python-porting] Is there any guide or post to follow in order to write code that works both on python 2 and 3?

[Aaron Meurer]

For Python 2 compatible code, you should always be explicit and
subclass every class from object, like

class A(object):
    def __init__(self):
        pass

This is one of the easy things for writing cross compatible code. The
hard things are dealing with the str/bytes differences, and the little
tricks you have to do to support metaclasses and exec.

Aaron Meurer


On Mon, Apr 21, 2014 at 2:36 PM, Guido van Rossum <guido at python.org> wrote:
> The commonly recommended resource is http://python3porting.com/
>
> Also make sure to get to 100% test coverage!
>
>
> On Mon, Apr 21, 2014 at 12:31 PM, Santiago Basulto
> <santiago.basulto at gmail.com> wrote:
>>
>> Hello everyone. I'm writing a library that I'd like to be usable from
>> both, Python 2 and Python 3. Actually, there's a library that works just for
>> python2 and I want to make it work for 3.
>>
>> I know it's not really hard to make it work for both versions, but
>> sometimes I have doubts. For example. If I define a simple class:
>>
>> class A:
>>     def __init__(self):
>>         pass
>>
>> It will have different meanings if it's run with Python 2 or Python 3
>> (lacking 'object' inheritence for python2).
>>
>> Is there any guide, blog post, anything?
>>
>> Thank you very much.
>>
>> --
>> Santiago Basulto.-
>>
>> _______________________________________________
>> Baypiggies mailing list
>> Baypiggies at python.org
>> To change your subscription options or unsubscribe:
>> https://mail.python.org/mailman/listinfo/baypiggies
>
>
>
>
> --
> --Guido van Rossum (python.org/~guido)
>
> _______________________________________________
> Python-porting mailing list
> Python-porting at python.org
> https://mail.python.org/mailman/listinfo/python-porting
>