无法使用唯一的第一个键确定性地更新嵌套字典

Question

我正在尝试创建字典以镜像类中的网络硬件。我已经嵌套了几个对象属性，以便于管理代码：

    self.hw_profile = defaultdict(dict)        
    self.a1k2x_dict = defaultdict(dict)
    self.a1k4_dict = defaultdict(dict)
    self.a1k6_dict = defaultdict(dict)

    self.spa_none = {}

    int_map = {'local_int':"", 'local_pc':"", 'opp_dev_desc':"", 'opp_dev_match':"", 'opp_int':""}

    self.spa_6x1g = {'spa_name':"6XGE-BUILT-IN",
                      'int_type' : 'GigabitEthernet', 
                      'int_quant' : 6,
                      'int_map' : int_map
                    }                  
    self.spa_1x10g = {'spa_name' : 'SPA-1X10GE-L-V2',
                      'int_type' : 'TenGigabitEthernet', 
                      'int_quant' : 1,
                      'int_map' : int_map
                    }
    self.spa_5x1g = {'spa_name' : "SPA-5X1GE-V2", 
                      'int_type' : 'GigabitEthernet', 
                      'int_quant' : 5,
                      'int_map' : int_map
                    }
    self.a1k6_dict = {'slot0':
                        {'spa0': self.spa_1x10g, 
                         'spa1': self.spa_none, 
                         'spa2': self.spa_none,
                         'spa3': self.spa_5x1g},
                       'slot1':
                        {'spa0': self.spa_1x10g, 
                         'spa1': self.spa_1x10g, 
                         'spa2': self.spa_none,
                         'spa3': self.spa_none},
                       'slot2':
                        {'spa0': self.spa_1x10g, 
                         'spa1': self.spa_1x10g, 
                         'spa2': self.spa_none,
                         'spa3': self.spa_none}
                    }

    self.a1k2x_dict = {'slot0':
                        {'spa0': self.spa_6x1g,
                         'spa1': self.spa_5x1g, 
                         'spa2': self.spa_none,
                         'spa3': self.spa_none},
                    }

现在我想采用这些抽象词典并用特定值填充它们。我尝试使用.get / .update或仅使用self.hw_profile['slot0']['spa1'] = x等设置新值。

    elif self.hw_name == "cisco-asr-1006":
        self.hw_profile = self.a1k6_dict

    temp_dict1 = {'local_int' : "0/0/0" , 'local_pc':"", 'opp_dev_desc' : "blah1", 'opp_dev_match' : 
                self.re_core1_match, 'opp_int':"" }

    self.hw_profile.get('slot0', {}).get('spa0', {}).get('int_map', {}).update(temp_dict1)


    temp_dict2 = {'local_int' : "1/0/0" , 'local_pc':"", 'opp_dev_desc' : "blah2", 'opp_dev_match' : 
                self.re_core2_match, 'opp_int':"" }

    self.hw_profile.get('slot1', {}).get('spa0', {}).get('int_map', {}).update(temp_dict2)


    temp_dict3 = {'local_int' : "2/0/0" , 'local_pc':"", 'opp_dev_desc' : "blah", 'opp_dev_match' : 
                 self.re_alg_match, 'opp_int':"" }
    self.hw_profile.get('slot2', {}).get('spa0', {}).get('int_map', {}).update(temp_dict3)

我遇到的问题是，无论我做什么，字典中的第一个键似乎都会被忽略，树下的所有分支都会被写入LAST值，如此打印输出所示。词典：

[slot1]
  [spa2]
  [spa3]
  [spa0]
    spa_name = SPA-1X10GE-L-V2
    [int_map]
      opp_dev_desc = opposing ALG
      local_int = 2/0/0
      local_pc =
      opp_dev_match = <_sre.SRE_Pattern object at 0x7f647551b870>
      opp_int =
    int_quant = 1
    int_type = TenGigabitEthernet
  [spa1]
    spa_name = SPA-1X10GE-L-V2
    [int_map]
      opp_dev_desc = blah
      local_int = 2/0/0
      local_pc =
      opp_dev_match = <_sre.SRE_Pattern object at 0x7f647551b870>
      opp_int =
    int_quant = 1
    int_type = TenGigabitEthernet
[slot0]
  [spa2]
  [spa3]
    spa_name = SPA-5X1GE-V2
    [int_map]
      opp_dev_desc = blah
      local_int = 2/0/0
      local_pc =
      opp_dev_match = <_sre.SRE_Pattern object at 0x7f647551b870>
      opp_int =
    int_quant = 5
    int_type = GigabitEthernet
  [spa0]
    spa_name = SPA-1X10GE-L-V2
    [int_map]
      opp_dev_desc = opposing ALG
      local_int = 2/0/0
      local_pc =
      opp_dev_match = <_sre.SRE_Pattern object at 0x7f647551b870>
      opp_int =
    int_quant = 1
    int_type = TenGigabitEthernet
  [spa1]
[slot2]
  [spa2]
  [spa3]
  [spa0]
    spa_name = SPA-1X10GE-L-V2
    [int_map]
      opp_dev_desc = blah
      local_int = 2/0/0
      local_pc =
      opp_dev_match = <_sre.SRE_Pattern object at 0x7f647551b870>
      opp_int =
    int_quant = 1
    int_type = TenGigabitEthernet
  [spa1]
    spa_name = SPA-1X10GE-L-V2
    [int_map]
      opp_dev_desc = opposing ALG
      local_int = 2/0/0
      local_pc =
      opp_dev_match = <_sre.SRE_Pattern object at 0x7f647551b870>
      opp_int =
    int_quant = 1
    int_type = TenGigabitEthernet

我已经尝试了我能想到的一切。我遇到了一个错误，还是我错过了一些基本的东西？