How to use the py3status.events.IOPoller function in py3status

def __init__(self, py3_wrapper):
        """
        We need to poll stdin to receive i3bar messages.
        """
        Thread.__init__(self)
        self.config = py3_wrapper.config
        self.error = None
        self.py3_config = py3_wrapper.config["py3_config"]
        self.modules = py3_wrapper.modules
        self.on_click = self.py3_config["on_click"]
        self.output_modules = py3_wrapper.output_modules
        self.poller_inp = IOPoller(sys.stdin)
        self.py3_wrapper = py3_wrapper

self.write_tmp_i3status_config(tmpfile)

                i3status_pipe = Popen(
                    [self.i3status_path, "-c", tmpfile.name],
                    stdout=PIPE,
                    stderr=PIPE,
                    # Ignore the SIGTSTP signal for this subprocess
                    preexec_fn=lambda: signal(SIGTSTP, SIG_IGN),
                )

                self.py3_wrapper.log(
                    "i3status spawned using config file {}".format(tmpfile.name)
                )

                self.poller_inp = IOPoller(i3status_pipe.stdout)
                self.poller_err = IOPoller(i3status_pipe.stderr)
                self.tmpfile_path = tmpfile.name

                # Store the pipe so we can signal it
                self.i3status_pipe = i3status_pipe

                try:
                    # loop on i3status output
                    while self.py3_wrapper.running:
                        line = self.poller_inp.readline()
                        if line:
                            # remove leading comma if present
                            if line[0] == ",":
                                line = line[1:]
                            if line.startswith("[{"):
                                json_list = loads(line)
                                self.last_output = json_list

with NamedTemporaryFile(prefix="py3status_") as tmpfile:
                self.write_tmp_i3status_config(tmpfile)

                i3status_pipe = Popen(
                    [self.i3status_path, "-c", tmpfile.name],
                    stdout=PIPE,
                    stderr=PIPE,
                    # Ignore the SIGTSTP signal for this subprocess
                    preexec_fn=lambda: signal(SIGTSTP, SIG_IGN),
                )

                self.py3_wrapper.log(
                    "i3status spawned using config file {}".format(tmpfile.name)
                )

                self.poller_inp = IOPoller(i3status_pipe.stdout)
                self.poller_err = IOPoller(i3status_pipe.stderr)
                self.tmpfile_path = tmpfile.name

                # Store the pipe so we can signal it
                self.i3status_pipe = i3status_pipe

                try:
                    # loop on i3status output
                    while self.py3_wrapper.running:
                        line = self.poller_inp.readline()
                        if line:
                            # remove leading comma if present
                            if line[0] == ",":
                                line = line[1:]
                            if line.startswith("[{"):
                                json_list = loads(line)