Question

我正在尝试使用python创建数百个重复的JSON输出集，如下所示：

    {
      "children": [],
      "dependencies": [],
      "id": "123456",
      "name": "Epic 1",
      "legend": "",
      "optimistic": "13",
      "pessimistic": "15",
      "expected": "14",
      "min": 13,
      "max": 15,
      "distribution": 0,
      "estimate": 0,
      "discrete": false,
      "isProject": false,
      "state": 1
    },
    {
      "children": [],
      "dependencies": [],
      "id": "234567",
      "name": "Epic 2",
      "legend": "",
      "optimistic": "17",
      "pessimistic": "19",
      "expected": "18",
      "min": 17,
      "max": 19,
      "distribution": 0,
      "estimate": 0,
      "discrete": false,
      "isProject": false,
      "state": 1
    }
...
...
... and so on ...

但是当我使用这样的代码时，每个新集都会覆盖最后一个，因此最后我只会得到一个集。

epicdict = {}
for epic in query:
  epicdict.update({"id": epic.id, "name": epic.key, "legend": "", "optimistic": opt, "pessimistic": pes, "expected": exp, "min": 0, "max": 0, "distribution": 0, "estimate": 0, "discrete": True, "isProject": True, "state": 1})
print(epicdict)

with open(jsonfile, 'w') as output:
    json.dump(epicdict, output)

如何在不覆盖任何内容的情况下构建JSON输出？

Answer 1

实际上，当您执行epicdict = {}时，您是在创建字典，而不是集合，因此，您在该代码中真正要做的就是使用键/值（覆盖它们）来更新相同的字典。您要使用set()和.add()。看起来像这样：

epicdict = set()
for epic in query:
  epicdict.add({"id": epic.id, "name": epic.key, "legend": "", "optimistic": opt, "pessimistic": pes, "expected": exp, "min": 0, "max": 0, "distribution": 0, "estimate": 0, "discrete": True, "isProject": True, "state": 1})

Answer 2

使用“ append”将其弄清楚。我可以继续添加到“根”下面的集合中。

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如何使用python重复相同的键集来迭代JSON输出？

2 个答案: