kj <no.em...@please.post> wrote: > But to ground > the problem a bit I'll say that the exception above happens during > the execution of a statement of the form: > > x = '%s %s' % (y, z) > > Also, I found that, with the exact same values y and z as above, > all of the following statements work perfectly fine: > > x = '%s' % y > x = '%s' % z > print y > print z > print y, z >
One of y or z is unicode, the other is str. The statement that goes wrong is combining the unicode string with the other one so the result has to be unicode. That means whichever of y or z is str is being decoded to unicode is being decoded with the default of 'ascii'. When you format them separately one assignment to x gives a unicode result, the other gives str. When you print them you are encoding the unicode value to ascii and that isn't giving a problem. 1. Print the repr of each value so you can see which is which. 2. Explicitly decode the str to unicode using whatever encoding is correct (possibly utf-8) when formatting. 3. Explicitly encode back to str when printing using the encoding of your output device. 4. Know what types you are using: never mix str and unicode without being explicit. 5. When you post to this newsgroup include the full traceback, not just the error message. -- http://mail.python.org/mailman/listinfo/python-list
