def add_signer(self, scope, vk):
        self.data['signers'].append({'scope':scope, 'vk':vk})
Remember verifying key vk as being valid for signing in scope.
dataset/ETHPy150Open chalasr/Flask-P2P/venv/lib/python2.7/site-packages/wheel/signatures/keys.py/WheelKeys.add_signer