comefrom: <garvit244>328_1.py
code: def oddEvenList( head):
      if  not head:
          return None
      
      odd, even = head, head.next
      evenHead = even
      while even and even.next:
          odd.next = even.next
          odd = odd.next
          even.next = odd.next
          even = even.next
      
      odd.next = evenHead
      return head
masked: def sample_funcname ( var_0 ) :
      if not var_0 :
          return None
      var_2 , var_4 = var_0 , var_0.next
      var_5 = var_4
      while var_4 and var_4.next :
          var_2.next = var_4.next
          var_2 = var_2.next
          var_4.next = var_2.next
          var_4 = var_4.next
      var_2.next = var_5
      return var_0
  