Python: JSON schema string formats date/time use datetime.datetime instead of datetime.date/datetime.time

[lehnerpat]

Given the following input JSON schema:

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$ref": "#/definitions/Example",
  "definitions": {
    "Example": {
      "type": "object",
      "additionalProperties": false,
      "properties": {
        "d":  { "type": "string", "format": "date" },
        "t":  { "type": "string", "format": "time" },
        "dt": { "type": "string", "format": "date-time" }
      },
      "required": ["d","t","dt"]
    }
  }
}

The Python generator generates a class like this:

@dataclass
class Example:
    d: datetime
    dt: datetime
    t: datetime

    # methods snipped

It uses datetime.datetime as type for all properties, even though I think datetime.date and datetime.time would be more appropriate, respectively.

In particular, serializing an instance of the generated class to a dict produces:

>>> Example(d=datetime.utcnow(),t=datetime.utcnow(),dt=datetime.utcnow()).to_dict()
{'d': '2022-07-20T18:59:48.036119', 'dt': '2022-07-20T18:59:48.036124', 't': '2022-07-20T18:59:48.036124'}

AFAICT, this does not match the JSON schema.

Is there a particular reason why the Python generator treats date-time, date and time the same?