如何从字典列表转换成字典？

Question

Input Data :

val1 = '[{"EmpID":123456,"AnalystID": "8aa18b9c59XXXXXb20cc2534","173f48XXXXXX427f3f14516dd0"]}]'

Expected Output:

val_op = {"EmpID":123456,"AnalystID": "8aa18b9c59XXXXXb20cc2534","173f48XXXXXX427f3f14516dd0"]}

type(val1) is str
type(val_op) is dict
(basically I just need to remove first and last single quote which define Val1 as String).

Approach i tried:

>>> strlen = len(val1)
>>> payloadStr = val1[1:(strlen-1)]

'{"EmpID":123456,"AnalystID": 
"8aa18b9c59XXXXXb20cc2534","173f48XXXXXX427f3f14516dd0"]}'

>>> import json
>>>json.loads(payloadsStr)

{'EmpID':123456,'AnalystID': 
'8aa18b9c59XXXXXb20cc2534','173f48XXXXXX427f3f14516dd0']}

Answer 1

You don't have to treat the [] separately, json.loads can handle json list objects.

import json
payload = json.loads(val1)[0]

Also note that the list value in your string is missing an opening bracket and should instead be...

val1 = '[{"EmpID":123456,"AnalystID": ["8aa18b9c59XXXXXb20cc2534","173f48XXXXXX427f3f14516dd0"]}]'
#                                     ^

Since you mentionned the string comes from a web request, this means whoever made that request misformatted their json.

Answer 2

To clarify, this is a string. From the string, you want to extract a dictionary, that is contained in a list.

This makes it more difficult, as opposed to a simple list that contains a dictionary.

One approach you could do is:

val1 = val1.str.split('[')[1].str.split(']')[0] 

This should get rid of the brackets, and return an array of 1 index, which contains your dictionary in a string.

Another way, more straightforward is:

val1 = val1.replace('[','').replace(']','') 

From there

import json
json.loads(payloadsStr)

Should get you the dictionary.

Answer 3

Thank you all for all the solutions. Since Desired output need to have double quote, hence json.loads(val1) and dict(*eval(val1)) can not be used. I just tried to replace the [] from original string and when passed in Post Request as data payload, it worked fine.

strlen = len(val1)

payloadStr = val1[1:(strlen-1)]

response = requests.request("POST", url, verify=False, data=payloadsStr, headers=header)

response.text

got the output. Apologies for any confusion. Thanks Again