Sharing Variables between Python and HPppl

[roadrunner]

Sorry, i did not realize ans was a string (even though your first post states it very clearly). That makes it a little more tricky, but:

from hpprime import *
eval("primevar:=\"" + ans + "\"")

should give you a home variable called primevar that contains whatever string is stored in ans.

Then you can run your ppl program with:

eval("pplprogram(primevar)")

-road