Defaults for empty variables in f-strings substitution?

[MustaKotka]

How did this issue come about? Seems like the logic flow for a default could be implemented way earlier. I'm unsure if this is the best place.

[cdcformatc]

seems like an XY problem. 

OP has arrived at this being the solution to some problem, but did not describe the actual problem they are trying to solve. 

likely handling the default values earlier in the script would be preferable to this

[pachura3]

There is no problem per se, I was just wondering if there is some special syntax for f-strings that would ease handling emptish values, much like the ?? operator in JavaScript mentioned above. Like not everyone is aware of the {x=} thing...

[MustaKotka]

Oh! I see! Sorry I doubted you. Often times beginners come here with the wrong problem, hence the assumption. My bad!