def _encode(self, k):
        # NOTE: '_' is NOT in the base64 alphabet!
        return base64.encodestring(k).replace('\n', '_').replace("/", "-")
Clears the list of fields to select (but not extra_select columns).
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/persisted/dirdbm.py/DirDBM._encode--crossover with--dataset/ETHPy150Open CollabQ/CollabQ/vendor/django/db/models/sql/query.py/BaseQuery.clear_select_fields