Python equivalent of wrapping POST payload in single quotes
Well, "multiple json objects" is not a valid json, until it's a list of objects.
Generally, python doesn't care (just like any other network tool), json is just data format, and you need a different one. So you need to construct text payload yourself, i.e. json.dumps(payload1) + json.dumps(payload2), and send it via your network client as "raw" data.
I highly doubt that mainstream http libraries provide such usecase out of the box.
Not sure on reason for downvotes, i.e. requests library (which is kinda standard de-facto for high-level networking) have smart processing for payloads:
requests.post(url, data={'v1': 1, 'v2': 2}) # will encode it as form datarequests.post(url, json={'v1': 1, 'v2': 2}) # will encode as jsonrequests.post(url, data="{'v1': 1}{'v2': 2}") # will send as-isJson has nothing to do with http itself, it's just a way to serialize data. Most clients will eventually use urllib, which doesn't care at all, the only question is if library gives easy way to send data raw