In article <[EMAIL PROTECTED]>,
Torsten Bronger <[EMAIL PROTECTED]> wrote:
> Hallöchen!
>
> Russell E. Owen writes:
>
> > [...]
> >
> > So...to repeat the original question, is there any simpler
> > unicode-safe replacement for str(exception)?
>
> Please show us the tracebacks you get becuae unicode(s) must fail,
> too, if there are non-ASCII characters involved.
Why?
What I am trying to do is get a unicode representation of the arguments
of an exception. str(e), the obvious solution, fails if the exception
contains one argument that is a unicode string that cannot be decoded to
ASCII:
UnicodeEncodeError: 'ascii' codec can't encode character...ordinal not
in range(128)
What I do with the resulting unicode string afterwards is a different
issue. (As a matter of fact I display it on a widget that can display
unicode, but if I tried to print it to my Mac Terminal it would complain
about the non-ASCII characters--something I should look into fixing
someday).
But in any case, here are the exceptions you wanted to see. This is
using Python 2.5.2 on a Mac:
>>> d =u"\N{DEGREE SIGN}"
>>> d
u'\xb0'
>>> str(d)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec can't encode character u'\xb0' in
position 0: ordinal not in range(128)
>>> e = Exception(d)
>>> str(e)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
UnicodeEncodeError: 'ascii' codec can't encode character u'\xb0' in
position 0: ordinal not in range(128)
>>> e
Exception(u'\xb0',)
>>> ",".join([unicode(s) for s in e.args])
u'\xb0'
>>>
Based on the dearth of better replacements I've gone with the solution
that is shown as the last line above, coded as the following function
(incorporating Donn Cave's excellent suggestion to use repr as a
fallback). It has the minor issue that it can mask KeyboardInterrupt on
older versions of Python but it's close enough. A lot of work to replace
str(exc).
def strFromException(exc):
"""Unicode-safe replacement for str(exception)"""
try:
return str(exc)
except Exception:
try:
return ",".join([unicode(s) for s in exc.args])
except Exception:
# in case exc is some unexpected type
return repr(exc)
-- Russell
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