19.01.18 05:51, Guido van Rossum пише:
Can someone explain to me why this is such a controversial issue?
It seems reasonable to me to add new encodings to the stdlib that do the
roundtripping requested in the first message of the thread. As long as
they have new names that seems to fall under "practicality beats
purity". (Modifying existing encodings seems wrong -- did the feature
request somehow transmogrify into that?)
In any case you need to change your code. If add new error handler --
you need to change the decoding code to use this error handler:
text = data.decode(encoding, 'whatwgreplace')
If add new encodings -- you need to support an alias table that maps
standard encoding names to corresponding names of WHATWG encoding:
aliases = {'windows_1252': 'windows-1252-whatwg',
'windows_1251': 'windows-1251-whatwg',
'utf_8': 'utf-8-whatwg', # utf-8 + surrogatepass
...
}
...
text = data.decode(aliases.get(normalize_encoding(encoding), encoding))
I don't see an advantage of the second approach for the end user. And of
course it is more costly for maintainers, because we will need to
implement around 20 new encodings, and adds a cognitive burden for new
Python users, which now have more tables of encodings in the documentation.
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