On http://docs.python.org/3.1/library/codecs.html it says that

----
Possible values for errors are 'strict' (raise an exception in case of
an encoding error), 'replace' (replace malformed data with a suitable
replacement marker, such as '?'), 'ignore' (ignore malformed data and
continue without further notice), 'xmlcharrefreplace' (replace with the
appropriate XML character reference (for encoding only)) and
'backslashreplace' (replace with backslashed escape sequences (for
encoding only)) as well as any other error handling name defined via
register_error().
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shouldn't the 'surrogateescape' error handler from
http://docs.python.org/3.1/library/os.html#file-names-command-line-arguments-and-environment-variables
be mentioned here as well?