Evaluation of variable as f-string

[Chris Angelico]

On Wed, 8 Feb 2023 at 05:30, Stefan Ram <ram at zedat.fu-berlin.de> wrote:
>
> Rob Cliffe <rob.cliffe at btinternet.com> writes:
> >Does that mean that it is not possible to have a (built-in) function
> >that would construct and return a dictionary of all available variables
> >and their values?  If it were possible, it could be useful, and there
> >would be no impact on Python run-time speed if it were only constructed
> >on demand.
>
>   Here's a quick attempt to get local and non-local names as a set.
>   It might only work under some implementations of Python.
>
>   main.py
>
> set_class = set
>
> def f():
>     x = 0
>     def g():
>         set = set_class()
>         for n in g.__qualname__.split( '.' ):
>             if n != '<locals>':
>                 set = set.union( set_class( eval( n ).__code__.co_varnames ))
>         print( set )
>     g()
> f()
>
>   output
>
> {'n', 'set', 'x'}
>

Breaks on wrapped functions. Also, how are you going to get the values
of those variables?

ChrisA