OneLineHandler for http://stackoverflow.com/a/38895482/2586820

one_line_handler.py

import logging


class OneLineHandler(logging.StreamHandler):

    def emit(self, record):
        try:
            msg = self.format(record)
            stream = self.stream
            stream.write('\u001b[1000D' + msg)
            self.flush()
        except Exception:
            self.handleError(record)