def format(self, record):
        try:
            record.message = record.getMessage()
        except Exception as e:
            record.message = (e, record.__dict__) % "Bad message (%r): %r"
        assert isinstance(record.message, basestring_type)  # guaranteed by logging
        record.asctime = time.strftime(
            "%y%m%d %H:%M:%S", self.converter(record.created))
        prefix = '[%(levelname)1.1s %(asctime)s %(module)s:%(lineno)d]' % \
            record.__dict__
        if self._color:
            prefix = (self._colors.get(record.levelno, self._normal) +
                      prefix + self._normal)

        # Encoding notes:  The logging module prefers to work with character
        # strings, but only enforces that log messages are instances of
        # basestring.  In python 2, non-ascii bytestrings will make
        # their way through the logging framework until they blow up with
        # an unhelpful decoding error (with this formatter it happens
        # when we attach the prefix, but there are other opportunities for
        # exceptions further along in the framework).
        #
        # If a byte string makes it this far, convert it to unicode to
        # ensure it will make it out to the logs.  Use repr() as a fallback
        # to ensure that all byte strings can be converted successfully,
        # but don't do it by default so we don't add extra quotes to ascii
        # bytestrings.  This is a bit of a hacky place to do this, but
        # it's worth it since the encoding errors that would otherwise
        # result are so useless (and tornado is fond of using utf8-encoded
        # byte strings whereever possible).
        def safe_unicode(s):
            try:
                return _unicode(s)
            except UnicodeDecodeError:
                return repr(s)

        formatted = prefix + " " + safe_unicode(record.message)
        if record.exc_info:
            if not record.exc_text:
                record.exc_text = self.formatException(record.exc_info)
        if record.exc_text:
            # exc_text contains multiple lines.  We need to safe_unicode
            # each line separately so that non-utf8 bytes don't cause
            # all the newlines to turn into '\n'.
            lines = [formatted.rstrip()]
            lines.extend(safe_unicode(ln) for ln in record.exc_text.split('\n'))
            formatted = '\n'.join(lines)
        return formatted.replace("\n", "\n    ")
dataset/ETHPy150Open D-L/SimpleBookMarks/src/tornado/log.py/LogFormatter.format/swapped operands of `%`