RES: Re: Change Variable value from an python block or module?

Hello,

 

Taking the opportunity given by Steffen Kiel's question, I would like to know if it is possible to increase the number of inputs and outputs of a Python block by means of Python variables.

 

Best regards,

Artur Nogueira

 

Enviado do Email para Windows 10

 

De: Müller, Marcus (CEL)
Enviado:quarta-feira, 25 de março de 2020 12:07
Para: SteffenKiel@outlook.dk; discuss-gnuradio@gnu.org
Assunto: Re: Change Variable value from an python block or module?

 

Yes, but no!

 

So, GRC Variables are really a GRC concept, and you'd need to break

multiple layers of encapsulation from within a Python block just to

alter them. Really, that's possible with a simple callback function,

but please don't.

 

Instead, the appropriate way of dealing with this would be giving the

signal source a message port, on which it accepts new values via

message.

 

Then, from your Python or C++ block, just send a message.

 

Best regards,

Marcus

 

On Wed, 2020-03-25 at 14:57 +0000, Steffen Kiel wrote:

> Hello!

>

> I have a signal source whose frequency input is referenced to a variable.

> Is it possible to access this variables value and set it from a python block or python module?

>

> BR,

> Steffen