[Discuss-gnuradio] Problems on writing QA code for source block

[Bowen Hu]

Hi all,

I am having trouble writing QA code in python for C++ **source** blocks. Unlike the **sync** block demonstrated in the tutorial (https://wiki.gnuradio.org/index.php/Guided_Tutorial_GNU_Radio_in_C%2B%2B), which stops when there are no more input items. Since **source** blocks do not take any input, I have no idea how to stop the **source** block once the python QA code  was started.

thanks in advance for any advice.

Best regards,

Bowen