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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?
return jsonify(do_update_alias(arn, name, version, description))
@app.route('%s/functions/<function>/aliases/<name>' % PATH_ROOT, methods=['GET'])
def get_alias(function, name):
    arn = func_arn(function)
    if arn not in arn_to_lambda:
        return not_found_error(arn)
    if name not in arn_to_lambda.get(arn).aliases:
        return not_found_error(msg='Alias not found: %s:%s' % (arn, name))
    return jsonify(arn_to_lambda.get(arn).aliases.get(name))
@app.route('%s/functions/<function>/aliases' % PATH_ROOT, methods=['GET'])
def list_aliases(function):
    arn = func_arn(function)
    if arn not in arn_to_lambda:
        return not_found_error(arn)
    return jsonify({'Aliases': sorted(arn_to_lambda.get(arn).aliases.values(),
                                      key=lambda x: x['Name'])})
@app.route('/<version>/functions/<function>/concurrency', methods=['PUT'])
def put_concurrency(version, function):
    
    
    
    arn = func_arn(function)
    data = json.loads(request.data)
    lambda_details = arn_to_lambda.get(arn)
    if not lambda_details:
        return not_found_error(arn)
    lambda_details.concurrency = data
    return jsonify(data)
@app.route('/<version>/tags/<arn>', methods=['GET'])
def list_tags(version, arn):