<s> from modularodm . exceptions import ValidationValueError <EOL> from website . addons . base . exceptions import AddonError <EOL> class WikiError ( AddonError ) : <EOL> """<STR_LIT>""" <EOL> pass <EOL> class NameEmptyError ( WikiError , ValidationValueError ) : <EOL> """<STR_LIT>""" <EOL> pass <EOL> class NameInvalidError ( WikiError , ValidationValueError ) : <EOL> """<STR_LIT>""" <EOL> pass <EOL> class NameMaximumLengthError ( WikiError , ValidationValueError ) : <EOL> """<STR_LIT>""" <EOL> pass <EOL> class PageCannotRenameError ( WikiError ) : <EOL> """<STR_LIT>""" <EOL> pass <EOL> class PageConflictError ( WikiError ) : <EOL> """<STR_LIT>""" <EOL> pass <EOL> class PageNotFoundError ( WikiError ) : <EOL> """<STR_LIT>""" <EOL> pass <EOL> class InvalidVersionError ( WikiError ) : <EOL> """<STR_LIT>""" <EOL> pass </s>
