Hello list,
I've encountered an (at least for me) weird error in the project I'm working on (see the traceback below). Unfortunately there are several of my application's modules involved, so I cannot post all of my code here. I hope I can explain in plain words what I'm doing.
The line in the traceback that seems to cause the problems:
if self.nextfile == _('No destination file selected'):
"self.nextfile" is a variable that contains either the path to a file (the destination file for sound recording) or the gettext string you see above. For some reason I get the error below when "self.nextfile" contains a special character *and* the gettext string holds the german translation, which contains a special character, too (of course '\xe4' as 23rd character). It looks like there are no problems when I remove the german translation or when there are no special characters in the filename, but as soon as I have special characters on both sides of the equation the error occurs.
This is a part of Python that still confuses me. I think what is happening is
- self.nextfile is a Unicode string sometimes (when it includes special characters)
- the gettext string is a byte string
- to compare the two, the byte string is promoted to Unicode by decoding it with the system default encoding, which is generally 'ascii'.
- the gettext string includes non-ascii characters and the codec raises an exception.
I don't know what the best solution is. Two possibilities (substitute your favorite encoding for latin-1):
- decode the gettext string, e.g.
if self.nextfile == _('No destination file selected').decode('latin-1'):
- set your default encoding to latin-1. (This solution is frowned on by the Python-Unicode cognoscenti and it makes your programs non-portable). Do this by creating a file site-packages/sitecustomize.py containing the lines
import sys
sys.setdefaultencoding('latin-1')
Kent
###################################################################### Error: 1 UnicodeDecodeError Exception in Tk callback Function: <bound method Snackrecorder.start of <snackrecorder.Snackrecorder instance at 0xb77fe24c>> (type: <type 'instancemethod'>) Args: () Traceback (innermost last): File "/usr/lib/python2.3/site-packages/Pmw/Pmw_1_2/lib/PmwBase.py", line 1747, in __call__ return apply(self.func, args) File "/usr/local/share/phonoripper/snackrecorder.py", line 305, in start if self.nextfile == _('No destination file selected'): UnicodeDecodeError: 'ascii' codec can't decode byte 0xe4 in position 22: ordinal not in range(128)
######################################################################
I've looked into PmwBase.py, but I couldn't figure out what's going on, so I hope that someone here can give me a hint.
Thanks in advance and best regards
Michael _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
_______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
