class InvalidSessionID(Exception): pass
class InvalidCredentials(Exception): pass
class InternalServerError(Exception): pass
class InvalidTypeID(Exception): pass
class InvalidUID(Exception): pass
class NotAttachable(Exception): pass
class InvalidZIP(Exception): pass
class NotAPackage(Exception): pass
class VocabularyMisuse(Exception): pass
class XMLParseError(Exception): pass
class QueryError(Exception): pass
class InvalidAppUser(Exception): pass
class AccessDenied(Exception): pass
class InvalidAttachmentID(Exception): pass

def getException(n):
    m = {
            1:InvalidSessionID,
            2:InvalidCredentials,
            3:InternalServerError,
            4:InvalidTypeID,
            5:InvalidUID,
            6:NotAttachable,
            7:InvalidAppUser,
            8:AccessDenied,
            9:InvalidAttachmentID,
            11:InvalidZIP,
            12:NotAPackage,
            13:VocabularyMisuse,
            14:XMLParseError,
            21:QueryError,
            22:QueryError}
    return m[n]