code: def python_localized_datetime_to_human_iso(value: datetime.datetime) -> str:
      
      s = value.strftime("%Y-%m-%dT%H:%M:%S.%f%z")
      return s[:29] + ":" + s[29:]
docs: Converts a Python ``datetime`` that has a timezone to an ISO-8601 string
      with ``:`` between the hours and minutes of the timezone.
  
      Example:
          >>> import datetime
          >>> import pytz
          >>> x = datetime.datetime.now(pytz.utc)
          >>> python_localized_datetime_to_human_iso(x)
          '2017-08-21T20:47:18.952971+00:00'