code: def constraint2(x):  # impose exactly
      return impose_sum(7.5 * len(x), x)
  
imports: from g02 import objective, bounds, xs, ys
  from g02_alt import penalty1, penalty2, quadratic_inequality
  from mystic.math.measures import impose_product, impose_sum
label_desc: Use image node_id 2 for calling a global function with example usage: constraint2(x) and returns: impose_sum