[ python-Bugs-1758804 ] unicode(None,charset) raise TypeError

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Bugs item #1758804, was opened at 2007-07-23 10:39
Message generated for change (Comment added) made by gbrandl
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Category: Unicode
Group: Python 2.5
>Status: Pending
>Resolution: Works For Me
Priority: 5
Private: No
Submitted By: Guillaume (guillaumb)
Assigned to: M.-A. Lemburg (lemburg)
Summary: unicode(None,charset) raise TypeError

Initial Comment:
Behavior of unicode() builtin is not the same with None as the first argument if we give  the second optional argument.

>>> unicode(None)
u'None'
>>> unicode(None,'ascii')
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
TypeError: coercing to Unicode: need string or buffer, NoneType found

This is confusing.


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>Comment By: Georg Brandl (gbrandl)
Date: 2007-07-23 11:53

Message:
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Maybe, but it is at least documented:
http://docs.python.org/lib/built-in-funcs.html

"If encoding and/or errors are given, unicode()  will decode the object
which can either be an 8-bit string or a character buffer using the codec
for encoding."

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