code: def evalUnits(unitStr):
      """
      Evaluate a unit string into ([numerators,...], [denominators,...])
      Examples:
          N m/s^2   =>  ([N, m], [s, s])
          A*s / V   =>  ([A, s], [V,])
      """
      pass
  
imports: import unicodedata
label_desc: Use image node_id 2 for calling a global function with example usage: evalUnits(unitStr) without return types