Question

我正在尝试搜索在JSON文件中输入的每个描述以搜索匹配，然后返回哈希键。示例：搜索“Cat Photo”应返回散列密钥“QmVQ8dU8cpNezxZHG2oc3xQi61P2n”。任何帮助都会很棒。

searchTerm = raw_input('Enter search term: ')
with open('hash.json', 'r') as file:
    data = json.load(file)
    hashlist = data['hashlist']

if searchTerm in hashlist == True:
        print key
    else:
        print "not found"

JSON文件示例：

   {
"hashlist": {
    "QmVZATT8cQM3kwBrGXBjuKfifvrE": {
        "description": "Test Video",
        "url": ""
    },
    "QmVQ8dU8cpNezxZHG2oc3xQi61P2n": {
        "description": "Cat Photo",
        "url": ""
    },
    "QmYdWbMy8wPA7V12bX7hf2zxv64AG": {
        "description": "Test Dir",
        "url": ""
    }
}
}%

Answer 1

您需要构建一个dict，以便从description映射到hashcode：

d = {v['description']: h for h, v in hashlist.items()}

然后您可以通过以下方式访问它：

d['Cat Photo']

Answer 2

results = [k for k in d['hashlist'] if 'Cat' in d['hashlist'][k]['description']]
for result in results:
    print(result)

如果你有问题，请告诉我。

Answer 3

试试这个

hash = next(k for k,v in hashlist.items() if v['description'] == 'Cat Photo')

如果在描述键

中找不到猫照，请记住这会抛出错误

Python为特定值搜索JSON字典并返回该密钥

3 个答案: