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Under utils/common.py, 

TIMESTAMP_FORMAT_MILLIS = '%Y-%m-%dT%H:%M:%S.%fZ'

The %f produces time with microseconds, for example: 2020-03-18T19:43:18.115783Z.


However, when interacting the AWS s3 and sns apis, I receive DateTimes like this:

2020-03-02T22:32:13.240Z
i.e. milliseconds. 

This seems like a simple change to the utils. TIMESTAMP_FORMAT_MILLIS is named as if it should be millis as well. This is seems like a simple change. Is there a reason it should be microseconds?
if isinstance(j, str):
            j = json.loads(j)
        self.__dict__.update(j)
    def to_dict(self):
        return json.loads(self.to_json())
    @classmethod
    def from_json(cls, j):
        j = JsonObject.as_dict(j)
        result = cls()
        result.apply_json(j)
        return result
    @classmethod
    def from_json_list(cls, l):
        return [cls.from_json(j) for j in l]
    @classmethod
    def as_dict(cls, obj):
        if isinstance(obj, dict):
            return obj
        return obj.to_dict()
    def __str__(self):
        return self.to_json()
    def __repr__(self):
        return self.__str__()
class CaptureOutput(object):