Using json.dumps with a nested dictionary

Question

I have the following code which errors out

def generate_search_query(matterID,leaver_user,vaultAccessToken):
    for user in leaver_user:
        url = "https://vault.googleapis.com/v1/matters/"+matterID+"/savedQueries"

        headers = {
            "Accept" : "application/json",
            "Content-Type" : "application/json",
            "Authorization": "Bearer " + vaultAccessToken
        }

        query={
            "query": {
            "corpus": "MAIL",
            "dataScope": "ALL_DATA",
            "searchMethod": "ACCOUNT",
            "accountInfo": { "emails": [user]},
            "mailOptions": {"excludeDrafts : false"},
            "timeZone": "Atlantic/Canary",
            "method": "ACCOUNT"
            }
        }

        body=json.dumps({
            "displayName": "test",
            "query": {
                "corpus": "MAIL",
                "dataScope": "ALL_DATA",
                "searchMethod": "ACCOUNT",
                "accountInfo": { "emails": [user]},
                "mailOptions": {"excludeDrafts : false"},
                "timeZone": "Atlantic/Canary",
                "method": "ACCOUNT"
            }}
        )


        response = requests.request(
            "POST",
            url,
            headers=headers,
            data=body
        )
        print(response.content)

Which outputs TypeError: Object of type set is not JSON serializable when executed.

I've tried to use the below code which works however unfortunately the Google API is very picky unless I use json.dumps() .

query={
    "query": {
        "corpus": "MAIL",
        "dataScope": "ALL_DATA",
        "searchMethod": "ACCOUNT",
        "accountInfo": { "emails": [user]},
        "mailOptions": {"excludeDrafts : false"},
        "timeZone": "Atlantic/Canary",
        "method": "ACCOUNT"
        }
}


body = {"displayName": user + "email search query",}

data = {"displayName": body,"query": query}

response = requests.request(
    "POST",
    url,
    headers=headers,
    data=data
)
print(response.content)

Then this is returned from the Google Vault API

b'{\n "error": {\n "code": 400,\n "message": "Invalid JSON payload received. Unexpected token.\\ndisplayName=displayN\\n^",\n "status": "INVALID_ARGUMENT"\n }\n}\n'

Then if I use

body =json.dumps( {"displayName": user + "email search query",})
data =json.dumps( {"displayName": body,"query": query})

I get a Python error

TypeError: Object of type set is not JSON serializable

What's the best way to solve this?

Answer 1

It seems that your nested object contain on object of type set.

You can quickly replicate the same error with following

json.dumps({'test': set([1, 2])})

You can solve this by transforming the set into a list.

json.dumps({'test': list(set([1, 2]))})