Re: [Discuss-gnuradio] Examples of Python code using 'current_tags' function for Tag Debug block

[Vasil Velichkov]

Hi Marcus,

On 03/09/2019 08.21, Marcus D. Leech wrote:
> The subject pretty-much says it all.
> 
> I'm looking for a Python example of code that uses the 'current_tags' 
> function for the Tag Debug block, and picks apart the resulting tag(s).

See:
https://github.com/gnuradio/gnuradio/blob/822aedb5b8934549a10b70dc602a178f9765eef0/gr-blocks/python/blocks/qa_file_metadata.py#L103-L119
https://github.com/gnuradio/gnuradio/blob/822aedb5b8934549a10b70dc602a178f9765eef0/gr-blocks/python/blocks/qa_burst_tagger.py#L42-L57
https://github.com/gnuradio/gnuradio/blob/822aedb5b8934549a10b70dc602a178f9765eef0/gr-digital/python/digital/qa_correlate_access_code_tag.py#L54-L60

> In Python land are the tags just a tuple/list or a dictionary?  I've snarfled 
> through the generated SWIG code, and can't seem to decipher it.
>
> I'd expect perhaps a tuple:
> 
> (offset, tag, value, srcid)
> 
> With "tag", "value" and "srcid" all being PMTs.
> 

It's not a tuple or list but some swig object

(<gnuradio.gr.runtime_swig.tag_t; proxy of <Swig Object of type 'gr::tag_t *' 
at 0x7fb5ed6883c0> >, <gnuradio.gr.runtime_swig.tag_t; proxy of <Swig Object of 
type 'gr::tag_t *' at 0x7fb5ed6884e0> >)

Hope this helps.

Cheers,
Vasil