def sign(self, value):
        value = want_bytes(value)
        timestamp = base64_encode(int_to_bytes(self.get_timestamp()))
        sep = want_bytes(self.sep)
        value = value + sep + timestamp
        return value + sep + self.get_signature(value)
DRY routine for setting up a GeoQuerySet method that attaches a
dataset/ETHPy150Open GeekTrainer/Flask/Work/Trivia - Module 5/env/Lib/site-packages/itsdangerous.py/TimestampSigner.sign--crossover with--dataset/ETHPy150Open django/django/django/contrib/gis/db/models/query.py/GeoQuerySet._geomset_attribute