[Discuss-gnuradio] change a block parameter using a python script

[Marco Bosco]

Hi all!

I have a simple flowgraph: a signal source, a throttle and a waterfall plot. 
I'd like to change the frequency of the signal source during runtime using the 
output of a python script. The output of the python script is time-varying, 
then I should see some variations in the plot during runtime.  How can be this 
done? Is there a 'simple' way?

Thanks

Marco