How to use the influxdb.line_protocol.quote_ident function in influxdb

def drop_continuous_query(self, name, database=None):
        """Drop an existing continuous query for a database.

        :param name: the name of continuous query to drop
        :type name: str
        :param database: the database for which the continuous query is
            dropped. Defaults to current client's database
        :type database: str
        """
        query_string = (
            "DROP CONTINUOUS QUERY {0} ON {1}"
        ).format(quote_ident(name), quote_ident(database or self._database))
        self.query(query_string)

def create_user(self, username, password, admin=False):
        """Create a new user in InfluxDB.

        :param username: the new username to create
        :type username: str
        :param password: the password for the new user
        :type password: str
        :param admin: whether the user should have cluster administration
            privileges or not
        :type admin: boolean
        """
        text = "CREATE USER {0} WITH PASSWORD {1}".format(
            quote_ident(username), quote_literal(password))
        if admin:
            text += ' WITH ALL PRIVILEGES'
        self.query(text, method="POST")

:param default: whether or not to set the policy as default
        :type default: bool
        :param shard_duration: the shard duration of the retention policy.
            Durations such as 1h, 90m, 12h, 7d, and 4w, are all supported and
            mean 1 hour, 90 minutes, 12 hours, 7 day, and 4 weeks,
            respectively. Infinite retention is not supported. As a workaround,
            specify a "1000w" duration to achieve an extremely long shard group
            duration. Defaults to "0s", which is interpreted by the database
            to mean the default value given the duration.
            The minimum shard group duration is 1 hour.
        :type shard_duration: str
        """
        query_string = \
            "CREATE RETENTION POLICY {0} ON {1} " \
            "DURATION {2} REPLICATION {3} SHARD DURATION {4}".format(
                quote_ident(name), quote_ident(database or self._database),
                duration, replication, shard_duration)

        if default is True:
            query_string += " DEFAULT"

        self.query(query_string, method="POST")

>> ret_policies = client.get_list_retention_policies('my_db')
            >> ret_policies
            [{u'default': True,
              u'duration': u'0',
              u'name': u'default',
              u'replicaN': 1}]
        """
        if not (database or self._database):
            raise InfluxDBClientError(
                "get_list_retention_policies() requires a database as a "
                "parameter or the client to be using a database")

        rsp = self.query(
            "SHOW RETENTION POLICIES ON {0}".format(
                quote_ident(database or self._database))
        )
        return list(rsp.get_points())

def revoke_privilege(self, privilege, database, username):
        """Revoke a privilege on a database from a user.

        :param privilege: the privilege to revoke, one of 'read', 'write'
            or 'all'. The string is case-insensitive
        :type privilege: str
        :param database: the database to revoke the privilege on
        :type database: str
        :param username: the username to revoke the privilege from
        :type username: str
        """
        text = "REVOKE {0} ON {1} FROM {2}".format(privilege,
                                                   quote_ident(database),
                                                   quote_ident(username))
        self.query(text, method="POST")

:type default: bool
        :param shard_duration: the shard duration of the retention policy.
            Durations such as 1h, 90m, 12h, 7d, and 4w, are all supported and
            mean 1 hour, 90 minutes, 12 hours, 7 day, and 4 weeks,
            respectively. Infinite retention is not supported. As a workaround,
            specify a "1000w" duration to achieve an extremely long shard group
            duration.
            The minimum shard group duration is 1 hour.
        :type shard_duration: str

        .. note:: at least one of duration, replication, or default flag
            should be set. Otherwise the operation will fail.
        """
        query_string = (
            "ALTER RETENTION POLICY {0} ON {1}"
        ).format(quote_ident(name),
                 quote_ident(database or self._database), shard_duration)
        if duration:
            query_string += " DURATION {0}".format(duration)
        if shard_duration:
            query_string += " SHARD DURATION {0}".format(shard_duration)
        if replication:
            query_string += " REPLICATION {0}".format(replication)
        if default is True:
            query_string += " DEFAULT"

        self.query(query_string, method="POST")

def drop_measurement(self, measurement):
        """Drop a measurement from InfluxDB.

        :param measurement: the name of the measurement to drop
        :type measurement: str
        """
        self.query("DROP MEASUREMENT {0}".format(quote_ident(measurement)),
                   method="POST")

def revoke_privilege(self, privilege, database, username):
        """Revoke a privilege on a database from a user.

        :param privilege: the privilege to revoke, one of 'read', 'write'
            or 'all'. The string is case-insensitive
        :type privilege: str
        :param database: the database to revoke the privilege on
        :type database: str
        :param username: the username to revoke the privilege from
        :type username: str
        """
        text = "REVOKE {0} ON {1} FROM {2}".format(privilege,
                                                   quote_ident(database),
                                                   quote_ident(username))
        self.query(text, method="POST")

{
                            'name': 'cpu_mean',
                            'query': 'CREATE CONTINUOUS QUERY "cpu_mean" '
                                    'ON "db_name" '
                                    'RESAMPLE EVERY 10s FOR 2m '
                                    'BEGIN SELECT mean("value") '
                                    'INTO "cpu_mean" FROM "cpu" '
                                    'GROUP BY time(1m) END'
                        }
                    ]
                }
            ]
        """
        query_string = (
            "CREATE CONTINUOUS QUERY {0} ON {1}{2} BEGIN {3} END"
        ).format(quote_ident(name), quote_ident(database or self._database),
                 ' RESAMPLE ' + resample_opts if resample_opts else '', select)
        self.query(query_string)

:param shard_duration: the shard duration of the retention policy.
            Durations such as 1h, 90m, 12h, 7d, and 4w, are all supported and
            mean 1 hour, 90 minutes, 12 hours, 7 day, and 4 weeks,
            respectively. Infinite retention is not supported. As a workaround,
            specify a "1000w" duration to achieve an extremely long shard group
            duration.
            The minimum shard group duration is 1 hour.
        :type shard_duration: str

        .. note:: at least one of duration, replication, or default flag
            should be set. Otherwise the operation will fail.
        """
        query_string = (
            "ALTER RETENTION POLICY {0} ON {1}"
        ).format(quote_ident(name),
                 quote_ident(database or self._database), shard_duration)
        if duration:
            query_string += " DURATION {0}".format(duration)
        if shard_duration:
            query_string += " SHARD DURATION {0}".format(shard_duration)
        if replication:
            query_string += " REPLICATION {0}".format(replication)
        if default is True:
            query_string += " DEFAULT"

        self.query(query_string, method="POST")