Python中的嵌套字典

场景：根据我前面的问题（），我现在正试图以更高效的方式创建词典。我不是一次把所有的信息输入字典，而是一步一步地传递

到目前为止我拥有的：

cldr["holidays"] = {"type": "object",
                    "description": "Holiday specification",
                    "properties": {
                            "default":{
                                    "type": "object",
                                    "description": "Calendars used",
                                    "properties":{
                                            "ref": {"type": "string"},
                                            "type": {"type": "string"},
                                            "value": {"type": "string"}
                                            }
                                        },                                   
                            "exante": {
                                    "type": "object",
                                    "description": "Calendars used",
                                    "properties":{
                                            "ref": {"type": "string"},
                                            "type": {"type": "string"},
                                            "value": {"type": "string"}
                                            }
                                        },                                     
                            "expost": {
                                    "type": "object",
                                    "description": "Calendars used",
                                    "properties":{
                                            "ref": {"type": "string"},
                                            "type": {"type": "string"},
                                            "value": {"type": "string"}
                                            }
                                        },                                        
                                    } 
                   }

cldr["holidays"] = {"type": "object",
                    "description": "Holiday specification",
                    "properties": {"default", "exante", "expost"}
                    }

cldr["holidays"]["properties"]["default"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }
cldr["holidays"]["properties"]["exante"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }
cldr["holidays"]["properties"]["expost"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }

我想做什么：

cldr["holidays"] = {"type": "object",
                    "description": "Holiday specification",
                    "properties": {
                            "default":{
                                    "type": "object",
                                    "description": "Calendars used",
                                    "properties":{
                                            "ref": {"type": "string"},
                                            "type": {"type": "string"},
                                            "value": {"type": "string"}
                                            }
                                        },                                   
                            "exante": {
                                    "type": "object",
                                    "description": "Calendars used",
                                    "properties":{
                                            "ref": {"type": "string"},
                                            "type": {"type": "string"},
                                            "value": {"type": "string"}
                                            }
                                        },                                     
                            "expost": {
                                    "type": "object",
                                    "description": "Calendars used",
                                    "properties":{
                                            "ref": {"type": "string"},
                                            "type": {"type": "string"},
                                            "value": {"type": "string"}
                                            }
                                        },                                        
                                    } 
                   }

cldr["holidays"] = {"type": "object",
                    "description": "Holiday specification",
                    "properties": {"default", "exante", "expost"}
                    }

cldr["holidays"]["properties"]["default"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }
cldr["holidays"]["properties"]["exante"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }
cldr["holidays"]["properties"]["expost"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }

但这会产生以下错误：

TypeError: 'set' object does not support item assignment

问题1:对我做错了什么有什么看法吗

---

问题2:是否可以为本词典的内部部分创建一个共享类？既然它们本质上是相同的，我需要分别定义它们还是有更有效的方法来定义它们？

这有什么不对吗？

您错误地在属性键处创建了一个集合

cldr["holidays"] = {"type": "object",
                    "description": "Holiday specification",
                    "properties": {"default", "exante", "expost"} # creates a set
                    }

cldr["holidays"]["properties"]["default"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }
cldr["holidays"]["properties"]["exante"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }
cldr["holidays"]["properties"]["expost"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }

下面是您如何更正的方法

def holiday_property():
    return {
             "type": "object",
             "description": "",
             "properties": {
               "ref": {"type": "string"},
               "type": {"type": "string"},
               "value": {"type": "string"}
             }
           }

cldr["holidays"] = {
  "type": "object",
  "description": "Holiday specification",
  "properties": {}
}
cldr["holidays"]["properties"]["default"] = holiday_property()
cldr["holidays"]["properties"]["exante"] = holiday_property()
cldr["holidays"]["properties"]["expost"] = holiday_property()

为属性键指定一个空字典的值。当您执行

cldr[“holidays”][“properties”][“default”]={the internal dictionary}

时，您将设置

default

键及其值

cldr["holidays"] = {"type": "object",
                    "description": "Holiday specification",
                    "properties": {} # creates an empty dictionary
                    }

cldr["holidays"]["properties"]["default"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }
cldr["holidays"]["properties"]["exante"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }
cldr["holidays"]["properties"]["expost"] = {
                                "type": "object",
                                "description": "",
                                "properties":{
                                        "ref": {"type": "string"},
                                        "type": {"type": "string"},
                                        "value": {"type": "string"}
                                        }
                                    }

听起来你想要什么

def holiday_property():
    return {
             "type": "object",
             "description": "",
             "properties": {
               "ref": {"type": "string"},
               "type": {"type": "string"},
               "value": {"type": "string"}
             }
           }

cldr["holidays"] = {
  "type": "object",
  "description": "Holiday specification",
  "properties": {}
}
cldr["holidays"]["properties"]["default"] = holiday_property()
cldr["holidays"]["properties"]["exante"] = holiday_property()
cldr["holidays"]["properties"]["expost"] = holiday_property()

---

错误消息是不言自明的<代码>{“default”、“exante”、“expost”}是一个

集合

，而

集合

≠ <代码>指令。是什么让你觉得这样会更有效率？你做过任何基准测试吗？这将是一个dict{“default”：None，“exante”：None，“expost”：None}@meowgoes。我的问题是，将所有东西同时放在一起非常复杂（IMO），我最终会犯错误。因此，我试图将其分解为更小的部分。@KennyOstrom因此，在本例中，只需将每个内部部分设置为“无”，即可避免成为

set

类型？只需执行“属性”：{}，它将默认为一个空的dict。无论如何，您稍后将填充键。