def readline(self, size=None):
        """Reads one line from the stream."""
        if self._pos >= self.limit:
            return self.on_exhausted()
        if size is None:
            size = self.limit - self._pos
        else:
            size = min(size, self._pos - self.limit)
        try:
            line = self._readline(size)
        except (ValueError, IOError):
            return self.on_disconnect()
        if size and not line:
            return self.on_disconnect()
        self._pos += len(line)
        return line
dataset/ETHPy150Open GeekTrainer/Flask/Work/Trivia - Module 5/env/Lib/site-packages/werkzeug/wsgi.py/LimitedStream.readline/swapped operands of `-`