pydantic convert to jsonable dict (not full json string)

Pydantic 1.x (old answer)

The current version of pydantic does not support creating jsonable dict straightforwardly. But you can use the following trick:

Note: This is a suboptimal solution

class Model(BaseModel):
    the_id: UUID = Field(default_factory=uuid4)

print(json.loads(Model().json()))

{'the_id': '4c94e7bc-78fe-48ea-8c3b-83c180437774'}

Or more efficiently by means of orjson

orjson.loads(Model().json())

Pydantic 2

There is model_dump() method accepting mode parameter.

mode: Literal['json', 'python'] | str="python"

If mode is ‘json’, the dictionary will only contain JSON serializable types.

If mode is ‘python’, the dictionary may contain any Python objects.

class Model(BaseModel):
    the_id: UUID = Field(default_factory=uuid4)

print(Model().model_dump(mode="json"))
# {'the_id': '4c94e7bc-78fe-48ea-8c3b-83c180437774'}