On 3/7/2012 3:42 AM, Steven D'Aprano wrote:
I *think* he is complaining that some other library -- suds? -- has a
broken test for Unicode, by using:
if type(s) is unicode: ...
instead of
if isinstance(s, unicode): ...
Consequently, when the library passes a unicode *subclass* to the
tounicode function, the "type() is unicode" test fails. That's a bad bug.
No, that was my bug.
The library bug, if any, is that you can't apply
unicode(s, errors='replace')
to a Unicode string. TypeError("Decoding unicode is not supported") is
raised. However
unicode(s)
will accept Unicode input.
The Python documentation
("http://docs.python.org/library/functions.html#unicode";) does not
mention this. It is therefore necessary to check the type before
calling "unicode", or catch the undocumented TypeError exception
afterward.
John Nagle
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