comefrom: <qiyuangong>328_Odd_Even_Linked_List_1.py
code: def oddEvenList( head):
      odd = head
      if head is None:
          return None
      if head.next is None:
          return head
      even_head = even = head.next
      while odd.next is not None and even.next is not None:
          odd.next = even.next
          odd = odd.next
          even.next = odd.next
          even = even.next
      odd.next = even_head
      return head
masked: def sample_funcname ( var_0 ) :
      var_1 = var_0
      if var_0 is None :
          return None
      if var_0.next is None :
          return var_0
      var_5 = var_4 = var_0.next
      while var_1.next is not None and var_4.next is not None :
          var_1.next = var_4.next
          var_1 = var_1.next
          var_4.next = var_1.next
          var_4 = var_4.next
      var_1.next = var_5
      return var_0
  