Python logging handler to log dicts as JSON

jsonhandler.py

import json
import logging


class JsonDict(dict):
    def __str__(self):
        try:
            return json.dumps(self, ensure_ascii=False, sort_keys=True)
        except:
            return super().__str__()


class JsonHandler(logging.StreamHandler):
    def format(self, record):
        if isinstance(record.args, tuple):
            record.args = tuple([self._convert_dict(e) for e in record.args])
        else:
            record.args = self._convert_dict(record.args)
        return super().format(record)

    @staticmethod
    def _convert_dict(value):
        return JsonDict(value) if isinstance(value, dict) else value