class ParseException(BaseException):

    def __init__(self, msg, lineno=None, line=None):
        BaseException.__init__(self)
        self.msg = msg
        self.lineno = lineno
        self.line = line

    def __repr__(self):
        if self.lineno is None:
            return self.msg
        elif self.line is None:
            return u":{:d}:{:s}".format(self.lineno, self.msg)
        else:
            return u":{:d}: {:s}\nLINE: {:s}".format(self.lineno, self.msg, self.line)