Is it possible to parse a Snakemake file?

Question

I was wondering if is possible to programmatically parse a snakemake file. Snakefiles can often contain dynamic content both from python functions as well as wildcards that need to be resolved. I was wondering if its possible to resolve this content and then query the resulting rules/targets i.e. something like this (pseudo code):

./Snakefile:

rule:
    input: "program.py"
    output: "output_{suffix}.out"
    shell: "python program.py --arg {wildcard.suffix}" 

Parsing code:

ps = parse_snakemake("./Snakefile", target ="output_VAR.out")
print(ps.rules[0].shell)
#> "python program.py --arg VAR"