如何合并字典列表？

Question

我在这里扩展我的原始问题：How to append/merge list of dictionaries?。

我正在尝试在其中包含列表的单个词典列表之间合并一些数据。如果“ object”和“ semver”键匹配，则会进行合并。如果匹配相同的值，还将添加到其给定的“部分”中。给定以下数据：

data = [
        {
         "semver":"1.0.0",
         "sections":[
            {
               "name":"Add",
               "messages":[
                  "add: comment here"
               ]
            }
         ],
         "object":"files.sh"
      },
      {
         "semver":"1.0.0",
         "sections":[
            {
               "name":"Add",
               "messages":[
                  "add: Second comment here"
               ]
            }
         ],
         "object":"files.sh"
      },
      {
         "semver":"1.0.0",
         "sections":[
            {
               "name":"Fix",
               "messages":[
                  "Comment here"
               ]
            }
         ],
         "object":"files.sh"
      },
      {
         "semver":"2.0.0",
         "sections":[
            {
               "name":"Fix",
               "messages":[
                  "2.0.0 Fix Comment here"
               ]
            }
         ],
         "object":"files.sh"
      },
      {
         "semver":"2.0.0",
         "sections":[
            {
               "name":"Add",
               "messages":[
                  "2.0.0 Add Comment here"
               ]
            }
         ],
         "object":"files.sh"
      },
      {
         "semver":"2.0.0",
         "sections":[
            {
               "name":"Add",
               "messages":[
                  "2.0.0 comment for the NewFile"
               ]
            }
         ],
         "object":"NewFile.sh"
      },
]

我希望最终实现这一目标

data = [
        {
         "semver":"1.0.0",
         "sections":[
            {
               "name":"Add",
               "messages":[
                  "add: comment here",
                  "add: Second comment here"
               ]
            },
            {
               "name":"Fix",
               "messages":[
                  "Fix: comment here"
               ]
            }
         ],
         "object":"files.sh"
      },
        {
         "semver":"2.0.0",
         "sections":[
            {
               "name":"Add",
               "messages":[
                  "2.0.0 Add comment here",
               ]
            },
            {
               "name":"Fix",
               "messages":[
                  "2.0.0 Fix Comment here"
               ]
            }
         ],
         "object":"files.sh"
      },
      {
         "semver":"2.0.0",
         "sections":[
            {
               "name":"Add",
               "messages":[
                  "2.0.0 comment for the NewFile"
               ]
            }
         ],
         "object":"NewFile.sh"
      },

]

代码块

objects = {}  # mapping for object: object_data with sections
sections = defaultdict(list)  # mapping for object: all sections
for d in data:
    print(d["semver"])
    for k, v in list(d.items()):
        if v == d["semver"]:
            try:
                section = d.pop("sections")
                sections[d["object"]].extend(section)
                objects[d["object"]] = d  # populate with object data without sections
            except Exception as e:
                print(e)
                pass

output = []
for object_name, object_data in objects.items():
    object_data["sections"] = sections[object_name]
    output.append(object_data)

到目前为止，我正在遍历dict中的每个k，v对，但是无法绕过两个版本之间的匹配并在循环中追加到该特定的dict。

我在这里扩展我的原始问题：如何追加/合并字典列表？。我正在尝试在其中包含列表的单个词典列表之间合并一些数据。合并会发生...

Answer 1

应进行一些更改：