code: def _add_lists(list1, list2):
      if len(list1) <= len(list2):
          sol = [a + b for a, b in zip(list1, list2)] + list2[
              len(list1) :
          ]
      else:
          sol = [a + b for a, b in zip(list1, list2)] + list1[
              len(list2) :
          ]
      return sol
  
imports: from sympy.core.singleton import S
  from sympy.core.symbol import Symbol, symbols
  from sympy.printing import sstr
  from sympy.core.sympify import sympify
label_desc: Use image node_id 2 for calling a global function with example usage: _add_lists(list1, list2) and returns: sol