How to JSON-serialize a dictionary that contains a Django PointField?

Question

In my Django application, I have a python dictionary that looks like this:

myDict = {"A": 1, "B": "Z", "C": {"D":"E"},}

When I want to serialize this and return this dict via a curl hittable endpoint, I do the following. It works:

return HttpResponse(
    json.dumps(myDict), 
    content_type="application/json",
)

However, if I now add a value to myDict that is a PointField, like this:

myDict["myPoint"] = Point(70.0, 30.0,)

I get the following error:

TypeError: <Point object at 0x111bbed90> is not JSON serializable

So how do I serialize a dictionary that contains a PointField? I tried the following, but it definitely doesn't work:

return HttpResponse(
    GeoJSONSerializer().serialize(myDict, use_natural_keys=True), 
    content_type="application/json",
)

Searching the internet doesn't show me any clear examples of how to serialize a dictionary that contains a PointField.