Question

这是一个json响应，我从我的Web客户端视图中获取，我想检查这个列表字典是否包含数据。我怎么能继续？谢谢

 [
{
    "id": 41,
    "commercialOffice": false,
    "haveStoreRooms": false,
    "workFromHome": false,
    "seperateOffice": false,
    "receptionArea": false,
    "standardInsurance": false,
    "teamAudit": false,
    "auditReport": false,
    "receptionist": false,
    "qualityAssuranceTeam": false,
    "subContractor": null,
    "employeeIdentityCard": false,
    "employeeUniform": false,
    "insuranceList": "",
    "company": null
},
{
    "id": 45,
    "commercialOffice": false,
    "haveStoreRooms": false,
    "workFromHome": false,
    "seperateOffice": false,
    "receptionArea": false,
    "standardInsurance": false,
    "teamAudit": false,
    "auditReport": false,
    "receptionist": false,
    "qualityAssuranceTeam": false,
    "subContractor": null,
    "employeeIdentityCard": false,
    "employeeUniform": false,
    "insuranceList": "0",
    "company": 71
},
{
    "id": 46,
    "commercialOffice": true,
    "haveStoreRooms": true,
    "workFromHome": false,
    "seperateOffice": false,
    "receptionArea": false,
    "standardInsurance": true,
    "teamAudit": false,
    "auditReport": false,
    "receptionist": false,
    "qualityAssuranceTeam": false,
    "subContractor": null,
    "employeeIdentityCard": true,
    "employeeUniform": false,
    "insuranceList": "0",
    "company": 68
},

]

我在想这个

def (self):
   dic = {'key1': ['value1', 'value2'],
       'key2':  'value77' }
       values = dic.values()
      'value77' in [x for v in values for x in v if type(v)==list] or 
      'value77' in values

Answer 1

这取决于你的数据意味着什么。是dict键吗？它是一个给定的字典键吗？

Python中的空字典是假的，所以只需在列表中调用all()就可以告诉你每个字典是否至少有一个键值对：

>>> all( [ {1:2}, {'A':'B'} ] )
True
>>> all( [ {1:2}, {'A':'B'}, {}, {3:4}] )
False

如果要检查每个字典中是否存在给定键，可以将列表理解与get结合使用。

Answer 2

使用运算符：

if b in a:

<强>演示：

>>> a = {'foo': 1, 'bar': 2}
>>> 'foo' in a
True
>>$gt; 'spam' in a
False

@Eric Duminil解释的那个解决方案可以更好地解决你的问题

根据您的要求更新：

dic_3 = {'key1': ['value1', 'value2'],'key2':  '','key3':None }
for key, value in dic_3.iteritems():
    if value is None or value =='':
        print key ,"is Empty"

<强>输出：

key3 is Empty
key2 is Empty

检查字典是否包含true为false的数据，然后发回响应

2 个答案: