code: def green(f, curveXY):
      f = -sp.integrate(sp.sympify(f), y)
      f = f.subs({x: curveXY[0], y: curveXY[1]})
      f = sp.integrate(f * sp.diff(curveXY[0], t), (t, 0, 1))
      return f
  
imports: from fontTools.pens.basePen import BasePen
  from functools import partial
  from itertools import count
  import sympy
  import sys
label_desc: Use image node_id 1 for calling a global function with example usage: green(f, curveXY) and returns: f