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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def start(self):
 """Start client."""

        self.proc = []
        for telldus, port in (
                (TELLDUS_CLIENT, self.port_client),
                (TELLDUS_EVENTS, self.port_events)):
            args = shlex.split(SOCAT_CLIENT.format(
                type=telldus, host=self.host, port=port))
            self.proc.append(subprocess.Popen(
                args,
                stdin=subprocess.DEVNULL,
                stderr=subprocess.DEVNULL,
                stdout=subprocess.DEVNULL
            ))