json.loads change " " to single quote-CodePudding

I am writing a program to call an API. I am trying to convert my data payload into json. Thus, I am using json.loads() to achieve this.

However, I have encountered the following problem.

I set my variable as following:

apiVar = [
     "https://some.url.net/api/call", #url
     '{"payload1":"[email protected]", "payload2":"stringPayload"}',#payload
     {"Content-type": "application/json", "Accept": "text/plain"}#headers
]

Then I tried to convert apiVar[1] value into json object.

jsonObj = json.loads(apiVar[1])

However, instead of giving me output like the following:

{"payload1":"[email protected]", "payload2":"stringPayload"}

It gives me this instead:

{'payload1':'[email protected]', 'payload2':'stringPayload'}

I know for sure that this is not a valid json format. What I would like to know is, why does this happen? I try searching a solution for it but am not able to find anything on it. All code examples suggest it should have given me the double quote instead.

How should I fix it so that it will give the double quote output?

CodePudding user response：

json.loads() takes a JSON string and converts it into the equivalent Python datastructure, which in this case is a dict containing strings. And Python strings display in single quotes by default.

If you want to convert a Python datastructure to JSON, use json.dumps(), which will return a string. Or if you're outputting straight to a file, use json.dump().

In any case, your payload is already valid JSON, so the only reason to load it is if you want to make changes to it before calling the API.

CodePudding user response：

You need to use the json.dumps to convert the object back into json format.

The string with single quotes that you are reverencing is probably a str() or repr() method that is simply used to visualize the data as a python object (dictionary) not a json object. try taking a look at this:

print(type(jsonObj))
print(str(jsonObj))
print(json.dumps(jsonObj))