I think you need to wrap the json data with quotes

[rdhyee]

I chose """ as the surrounding quotes because I'm not sure whether you will have ' or " in the dict_to_pretty_string(post_data_json).

[rdhyee]

@spulec Sorry that I didn't work through your tests before submitting this PR. Let me take a look.

[spulec]

Python requests allows passing data as a dictionary. See here. Are you running into problems with this?

[rdhyee]

Yes, I'm having problems with using data as a dictionary. I'm using the latest version of requests (2.18.1). I find that if I switch data to json, then I have success.

Here's the form of something that doesn't work:

   data={
        "_ApplicationId": "xxxxxxxx",
        "_ClientVersion": "xxxxxxx",
        "_InstallationId": "xxxxxxx",
        "_JavaScriptKey": "xxxxxxxx",
        "_SessionToken": "xxxxxxxx",
        "_method": "GET",
        "where": {
            "group": {
                "__type": "xxxxxx",
                "className": "xxxxxxx",
                "objectId": "xxxxxxx"
            }
        }
    },

I find that replacing data with json

   json={
        "_ApplicationId": "xxxxxxxx",
        "_ClientVersion": "xxxxxxx",
        "_InstallationId": "xxxxxxx",
        "_JavaScriptKey": "xxxxxxxx",
        "_SessionToken": "xxxxxxxx",
        "_method": "GET",
        "where": {
            "group": {
                "__type": "xxxxxx",
                "className": "xxxxxxx",
                "objectId": "xxxxxxx"
            }
        }
    },

and turning data into a string works:

   data="""{
        "_ApplicationId": "xxxxxxxx",
        "_ClientVersion": "xxxxxxx",
        "_InstallationId": "xxxxxxx",
        "_JavaScriptKey": "xxxxxxxx",
        "_SessionToken": "xxxxxxxx",
        "_method": "GET",
        "where": {
            "group": {
                "__type": "xxxxxx",
                "className": "xxxxxxx",
                "objectId": "xxxxxxx"
            }
        }
    }""",