[Discuss-gnuradio] Python question

[Dan Halperin]

Hi,

I know this isn't really a gnuradio question, but a half-hour on Google
and browsing the Python site didn't find me the answer. What does ** in
Python do? Not in the exponent context (2 ** 4 = 16). In particular, I'm
looking at receive_path.py in the digital examples folder, the following
code:

        # Get demod_kwargs
        demod_kwargs = \
            self._demod_class.extract_kwargs_from_options(options)

        ...

        # receiver
        self.packet_receiver = \
            demod_pkts(fg,
                            self._demod_class(fg, **demod_kwargs),
                            access_code=None,
                            callback=self._rx_callback,
                            threshold=-1)

Is this some crazy C that SWIG does? Thanks,

-Dan