change the keys' names in a python json logger

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It is possible to rename the keys in a Python JSON logger using the rename_fields parameter of the JsonFormatter class.

For example, the following code will rename the "asctime" and "levelname" keys to "time" and "level", respectively:

      formatter = jsonlogger.JsonFormatter(
          fmt="%(asctime)s %(name)s %(levelname)s %(message)s",
          rename_fields={"asctime": "time", "levelname": "level"}, # <--- added this line
          datefmt="%d/%m/%y[ %H:%M:%S ]",
          json_indent=4
      )
    

This will produce the following JSON output:

      {
          "time": "29/06/22[ 14:10:12 ]",
          "name": "myLovelyLogger",
          "level": "WARNING",
          "message": "something terrible happened"
      }
    

It is also possible to rename the exc_info key, but this only works with version 2.0.6 or later of the python-json-logger package.