Gene pool with sum total limits and reactive sliders?

[Will_Wang]

Maybe you can try a negative weight to combinations whose sum exceeds the maximum.
This example (bottom screenshot of link) is linear. Perhaps you can use exponents.

How to create a three depending percentage domains sums up to hundred

The assert statement does not change any outputs at all, it’s only purpose is to test for conditions and throw an exception otherwise. To make some sort of ‘clamping’ function you can try this: a, b, c = abc if "_abc" not in globals(): # starting case (must be valid) assert 0.4 < a < 0.6 assert 0.4 < b < 0.6 assert 0.0 < c < 0.1 _abc = list(abc) if (0.4 < a < 0.6) and (0.4 < b < 0.6) and (0.0 < c < 0.1): _abc = list(abc) # store valid inputs else: a, b, c = _abc # …