12     'db_name' : 'database',
37     def connect(self, host=None, username=None, password=None, db_name=None):  argument
71     def connect(self, host=None, username=None, password=None, db_name=None):  argument
77             host=host, user=username, passwd=password, db=db_name,
94     def connect(self, host=None, username=None, password=None, db_name=None):  argument
95         self._connection = self._database_module.connect(db_name)
124     def connect(self, host=None, username=None, password=None, db_name=None):  argument
162                             'db_name')
211                       password=None, db_name=None):  argument
222         @param db_name: database name, default to None.
224         self.db_name = self._get_option('db_name', db_name)
260                                       db_name=self.db_name)
276                 db_name=None, try_reconnecting=None):  argument
283         self._read_options(db_type, host, username, password, db_name)
331         database.connect(db_type='sqlite', db_name=file_path)