For the long story read the tweet thread on pt 34 here https://twitter.com/KimStacks/status/1190943466492051457

encoders.py

"""
Helper classes for parsers.
"""
import datetime
import decimal
import json  # noqa


class FromValuesToDRFJSONEncoder(json.JSONEncoder):
    """
    JSONEncoder subclass that knows how to encode date/time/timedelta,
    decimal types, generators and other basic python objects.
    """

    def default(self, obj):
        # For Date Time string spec, see ECMA 262
        # https://ecma-international.org/ecma-262/5.1/#sec-15.9.1.15
        if isinstance(obj, datetime.datetime):
            representation = obj.isoformat()
            if representation.endswith("+00:00"):
                representation = representation[:-6] + "Z"
            return representation
        elif isinstance(obj, decimal.Decimal):
            # Serializers will coerce decimals to strings by default.
            return str(obj)
        return super().default(obj)