Python:如何在Python中更新JSON数据
Python:如何在Python中更新JSON数据
提问于 2018-08-10 01:47:18
下面的输入是JSON数组。我将下面的数据传递给我的Python方法。
input={"details": [{"first": [
{"id": "111", "flag": "T", "planName": "PPO"},
{"id": "123", "flag": "F", "planName": "HMO"},
{"id": "133", "flag": "T", "planName": "MA"}],
"second": [{"planName": "PPO", "planRank": "3"},
{"planName": "HMO", "planRank": "4"},
{"planName": "MA", "planRank": "7"}]}]}下面是JSON现有的文件，
final.json
{"first": [{"id": "111", "flag": "T", "planName": "EPO"},
{"id": "133", "flag": "T", "planName": "HMO"},
{"id": "123", "flag": "T", "planName": "MA"}],
"second": [{"planName": "PPO", "planRank": "1"},
{"planName": "HMO", "planRank": "1"},
{"planName": "MA", "planRank": "1"}]}当我将上面的输入数据传递给我的Python方法时，现有JSON文件中的相应字段应该会得到我的输入JSON，当它与id的现有JSON匹配时，‘updated.From’和'planname‘应该用来自输入JSON的传递值来更新。
从第二次开始，当PlanRank与'planName‘匹配时，应该使用从输入传递的新值来更新它。
预期输出(现有的JSON文件应该会得到如下更新)：
final.json
{"first": [{"id": "111", "flag": "T", "planName": "PPO"},
{"id": "133", "flag": "T", "planName": "MA"},
{"id": "123", "flag": "F", "planName": "HMO"}],
"second": [{"planName": "PPO", "planRank": "3"},
{"planName": "HMO", "planRank": "4"},
{"planName": "MA", "planRank": "7"}]}我已经尝试了下面的代码，但没有成功。
def update_json():
input={"details": [{"first": [
{"id": "111", "flag": "T", "planName": "PPO"},
{"id": "123", "flag": "F", "planName": "HMO"},
{"id": "133", "flag": "T", "planName": "MA"}],
"second": [{"planName": "PPO", "planRank": "3"},
{"planName": "HMO", "planRank": "4"},
{"planName": "MA", "planRank": "7"}]}]}
for x in input:
property = open("final.json")
data = json.load(property)
for y in range(len(data)):
for o in range(len(data['first'])):
if (data['first'][o]['id'] == input[x][0]['id']):
data['first'][o]['planName'] = input[x][0]['planName']
data['first'][o]['flag'] = input[x][0]['flag']
for j in range(len(data['second'])):
print(data['details'][j])
if (data['second'][j]['planName'] == input[x][0]['planName']):
data['second'][j]['planRank'] = input[x][0]['planRank']
with open(("final.json"), 'w') as file:
value = json.dumps(data)
file.write(value)
return "value"回答 1
Stack Overflow用户
回答已采纳
发布于 2018-08-10 05:19:23
你真的不应该把任何东西存储到变量input中，因为input是一个内置的python函数。
我尽了最大努力保持你的编码风格。
这适用于上面的示例：
def update_json():
input_data = {"details": [{"first": [
{"id": "111", "flag": "T", "planName": "PPO"},
{"id": "123", "flag": "F", "planName": "HMO"},
{"id": "133", "flag": "T", "planName": "MA"}],
"second": [{"planName": "PPO", "planRank": "3"},
{"planName": "HMO", "planRank": "4"},
{"planName": "MA", "planRank": "7"}]}]}
with open('final.json') as f:
data = json.load(f)
for x in input_data['details'][0]['first']:
for y in range(len(data['first'])):
if x['id'] == data['first'][y]['id']:
data['first'][y]['planName'] = x['planName']
data['first'][y]['flag'] = x['flag']
for j in input_data['details'][0]['second']:
for k in range(len(data['second'])):
if j['planName'] == data['second'][k]['planName']:
data['second'][k]['planRank'] = j['planRank']
with open(("final.json"), 'w') as file:
value = json.dumps(data)
file.write(value)
return value
update_json()页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/51773106
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