Also found this:

http://python-future.org/compatible_idioms.html

On Thu, Oct 11, 2018 at 10:30 AM Ben Duncan <linux...@gmail.com> wrote:

> Try These suggestions:
>
>
> https://stackoverflow.com/questions/491921/unicode-utf-8-reading-and-writing-to-files-in-python/844443
> http://www.evanjones.ca/python-utf8.html
>
>
> On Thu, Oct 11, 2018 at 9:38 AM Nico Zanferrari <nicoz...@gmail.com>
> wrote:
>
>> Hi,
>>
>> the encode-decode problem on question 1 is mostly related to the opening
>> of files. For example:
>>
>>     filename = os.path.join(FOLDER, subfolder, 'chapters.txt')
>>     if PY2:
>>         lines = open(filename)
>>     else:
>>         lines = open(filename, encoding='utf-8')
>>
>> In PY2 there is no option for the encoder, while on PY3 it is mandatory.
>>
>> I'm still learning, too ;-)
>> Nico
>>
>>
>> Il giorno gio 11 ott 2018 alle ore 16:16 Ben Duncan <linux...@gmail.com>
>> ha scritto:
>>
>>> Exactly what are you running into?
>>>
>>> I ran into this with my rewrite of of extract extract_pgsql_models.py:
>>> ......
>>>     f['type'] = "'decimal({},{})'".format(f['precision'],f['scale'])
>>> had to become
>>>  f['type'] = "'decimal({0},{1})'".format(f['precision'],f['scale'])
>>>
>>> And so one.
>>>
>>> The changes work across Python 2.7 and 3.6 seamlessly now ...
>>>
>>> FWIW, I'm just making the transition to Python 3,6 so I'm learning
>>> things the hard way ...
>>>
>>> Ben Duncan
>>>
>>>
>>> On Wed, Oct 10, 2018 at 4:02 PM Nico Zanferrari <nicoz...@gmail.com>
>>> wrote:
>>>
>>>> Hello,
>>>>
>>>> I'm playing with the web2py-book app, in order to make it python 3
>>>> compatible and also to improve it a bit. I have a couple of questions
>>>> related to default.py:
>>>>
>>>> 1. there were some encode-decode errors. I was able to resolve them
>>>> (see https://github.com/nicozanf/web2py-book for a preview) but I was
>>>> forced to use many "IF PY2 / else" conditions, in order to preserve python
>>>> 2.7 compatibility.  Is there a more elegant and pythonic solution to manage
>>>> this and similar situations?
>>>>
>>>> 2. I've added a try/except condition, in order to catch a missing
>>>> library (pygments). It works fine, but the session.flash error message is
>>>> not displayed at all because it's followed by a  redirect to index itself
>>>> and there is a session.forget() on the top that cleans it. If I comment the
>>>> session.forget() the flash message is correctly displayed. What can I do?
>>>>
>>>> Cheers,
>>>> Nico
>>>>
>>>> --
>>>> Resources:
>>>> - http://web2py.com
>>>> - http://web2py.com/book (Documentation)
>>>> - http://github.com/web2py/web2py (Source code)
>>>> - https://code.google.com/p/web2py/issues/list (Report Issues)
>>>> ---
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>>>>
>>> --
>>> Resources:
>>> - http://web2py.com
>>> - http://web2py.com/book (Documentation)
>>> - http://github.com/web2py/web2py (Source code)
>>> - https://code.google.com/p/web2py/issues/list (Report Issues)
>>> ---
>>> You received this message because you are subscribed to the Google
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>>>
>> --
>> Resources:
>> - http://web2py.com
>> - http://web2py.com/book (Documentation)
>> - http://github.com/web2py/web2py (Source code)
>> - https://code.google.com/p/web2py/issues/list (Report Issues)
>> ---
>> You received this message because you are subscribed to the Google Groups
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>> For more options, visit https://groups.google.com/d/optout.
>>
>

-- 
Resources:
- http://web2py.com
- http://web2py.com/book (Documentation)
- http://github.com/web2py/web2py (Source code)
- https://code.google.com/p/web2py/issues/list (Report Issues)
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