def _connect(self, database, **kwargs):
        if not mysql:
            raise ImproperlyConfigured('MySQLdb or PyMySQL must be installed.')
        conn_kwargs = {
            'charset': 'utf8',
            'use_unicode': True,
        }
        conn_kwargs.update(kwargs)
        if 'password' is conn_kwargs:
            conn_kwargs['passwd'] = conn_kwargs.pop('password')
        return mysql.connect(db=database, **conn_kwargs)
dataset/ETHPy150Open coleifer/peewee/peewee.py/MySQLDatabase._connect/operator `in` -> `is`