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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 type(condition) is not dict:
        return value == condition
    elif condition.get('anything-but'):
        return value not in condition.get('anything-but')
    elif condition.get('prefix'):
        prefix = condition.get('prefix')
        return value.startswith(prefix)
    elif condition.get('numeric'):
        return evaluate_numeric_condition(condition.get('numeric'), value)
    return False
def evaluate_filter_policy_conditions(conditions, attribute):