<s> """<STR_LIT>""" <EOL> class MessageError ( Exception ) : <EOL> """<STR_LIT>""" <EOL> class MessageParseError ( MessageError ) : <EOL> """<STR_LIT>""" <EOL> class HeaderParseError ( MessageParseError ) : <EOL> """<STR_LIT>""" <EOL> class BoundaryError ( MessageParseError ) : <EOL> """<STR_LIT>""" <EOL> class MultipartConversionError ( MessageError , TypeError ) : <EOL> """<STR_LIT>""" <EOL> class CharsetError ( MessageError ) : <EOL> """<STR_LIT>""" <EOL> class MessageDefect : <EOL> """<STR_LIT>""" <EOL> def __init__ ( self , line = None ) : <EOL> self . line = line <EOL> class NoBoundaryInMultipartDefect ( MessageDefect ) : <EOL> """<STR_LIT>""" <EOL> class StartBoundaryNotFoundDefect ( MessageDefect ) : <EOL> """<STR_LIT>""" <EOL> class FirstHeaderLineIsContinuationDefect ( MessageDefect ) : <EOL> """<STR_LIT>""" <EOL> class MisplacedEnvelopeHeaderDefect ( MessageDefect ) : <EOL> """<STR_LIT>""" <EOL> class MalformedHeaderDefect ( MessageDefect ) : <EOL> """<STR_LIT>""" <EOL> class MultipartInvariantViolationDefect ( MessageDefect ) : <EOL> """<STR_LIT>""" </s>
