sqlalchemy and Unicode strings: errormessage

Prasad, Ramit ramit.prasad at jpmchase.com
Tue May 31 12:31:36 EDT 2011


>line = unicode(line.strip(),'utf8')
>and now i get really utf8-strings. It does work but i dont know why it works. For me it looks like i change an utf8-string to an utf8-string.


I would like to point out that UTF-8 is not exactly "Unicode". From what I understand, Unicode is a standard while UTF-8 is like an implementation of that standard (called an encoding). Being able to convert to Unicode (the standard) should mean you are then able to convert to any encoding that supports the Unicode characters used.

As you can see below a string in UTF-8 is actually not Unicode. (decode converts to Unicode, encode converts away from Unicode)

>>> type(u'test'.encode('utf8'))
<type 'str'>
>>> type('test'.decode('utf8'))
<type 'unicode'>
>>> type('test'.encode('utf8'))
<type 'str'>
>>> type(u'test')
<type 'unicode'>


Ramit



Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
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