Are dicts supposed to raise comparison errors

[Robin Becker]

On 02/08/2018 08:20, Steven D'Aprano wrote:
> On Wed, 01 Aug 2018 22:14:54 +0300, Serhiy Storchaka wrote:
> 
...........
>> Not always. If your code supported Python 2 in the past, or third-party
>> dependencies supports or supported Python 2, this warning can expose a
>> real bug. Even if all your and third-party code always was Python 3
>> only, the standard library can contain such kind of bugs.
>>
>> Several years after the EOL of Python 2.7 and moving all living code to
>> Python 3 we can ignore bytes warnings as always false positive.
> 
> Even then, I don't know that we should do that. I do not believe that the
> EOL of Python 2 will end all confusion between byte strings and text
> strings. There is ample opportunity for code to accidentally compare
> bytes and text even in pure Python 3 code, e.g. comparing data read from
> files reading from files which are supposed to be opened in the same
> binary/text mode but aren't.
> 
> 

I think I agree; when python 2 is history I can drop all the messing about with bytes in the input and clean up the code a lot. 
Stuff like svg and xml will still need conversions which are generally unknown in advance.

The output will need converting to bytes, but that's fairly standard.
-- 
Robin Becker