通过向子对象添加数据来更新“master”JSON对象
通过向子对象添加数据来更新“master”JSON对象
提问于 2018-08-23 23:41:46
假设我有一个JSON对象列表：
list = [{"Name": "NY", "Date": "12/2008", "features": [{"attributes": {"OID": 2, "Zone": "A"}, "geo": {"x": 10, "y": 20}}]},{"Name": "NY", "Date": "12/2008", "features": [{"attributes": {"OID": 3, "Zone": "D"}, "geo": {"x": 21, "y": 8}}]},{"Name": "NY", "Date": "12/2008", "features": [{"attributes": {"OID": 5, "Zone": "C"}, "geo": {"x": 15, "y": 10}}]}]我想遍历这个列表并拥有一个'Master‘json对象：
masterJson = {}
for item in list:
print(item)这里的问题是，我不希望每次新的迭代都“更新”masterJson对象。本质上，子对象"Name“和"Date”总是相同的。我想要做的只是添加到"features“子对象列表中，以便在masterJson对象中看起来像这样：
masterJson = {"Name": "NY", "Date": "12/2008", "features": [{"attributes": {"OID": 2, "Zone": "A"}, "geo": {"x": 10, "y": 20}}, {"attributes": {"OID": 3, "Zone": "D"}, "geo": {"x": 21, "y": 8}}, {"attributes": {"OID": 5, "Zone": "C"}, "geo": {"x": 15, "y": 10}}]}我现在的想法是拥有类似下面这样的东西，但我不能让它对我很有效。我该如何实现这一点？
list = [{"Name": "NY", "Date": "12/2008", "features": [{"attributes": {"OID": 2, "Zone": "A"}, "geo": {"x": 10, "y": 20}}]},{"Name": "NY", "Date": "12/2008", "features": [{"attributes": {"OID": 3, "Zone": "D"}, "geo": {"x": 21, "y": 8}}]},{"Name": "NY", "Date": "12/2008", "features": [{"attributes": {"OID": 5, "Zone": "C"}, "geo": {"x": 15, "y": 10}}]}]
masterJson = list[0]
for item in list:
for item["features"]:
masterJson["features"] = (item["features"])
print(masterJson)另一种变体：
masterJson = list[0]
for item in list:
for k in item:
if k not in masterJson["features"]
masterJson["features"] = (item["features"])
print(masterJson)注意:结果似乎是"features": "features"
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-08-24 02:48:07
此循环位添加masterJson字典中的特征部分。
tempList = []
masterJson = {}
masterJson['Name'] = list[0]['Name']
masterJson['Date'] = list[0]['Date']
for item in list:
tempList.extend(item['features'])
masterJson['features']=tempList在使用此部件之前，将Name和Date部件添加到masterJson字典中，您就拥有了所需的结构。tempList是保存不同features字典的临时列表。干杯。
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原文链接：
https://stackoverflow.com/questions/51989564
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