_default() — flask Function Reference

Architecture documentation for the _default() function in provider.py from the flask codebase.

Function python DataHandling JsonProvider

Entity Profile

DataHandling→ JsonProvider→ _default() — flask Function Reference

Dependency Diagram

graph TD
  495a78d7_26f1_1764_0f3e_4b0560d2f70d["_default()"]
  64bf3a3f_ca45_015e_bd00_0190cbad6928["provider.py"]
  495a78d7_26f1_1764_0f3e_4b0560d2f70d -->|defined in| 64bf3a3f_ca45_015e_bd00_0190cbad6928
  style 495a78d7_26f1_1764_0f3e_4b0560d2f70d fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

src/flask/json/provider.py lines 108–121

def _default(o: t.Any) -> t.Any:
    if isinstance(o, date):
        return http_date(o)

    if isinstance(o, (decimal.Decimal, uuid.UUID)):
        return str(o)

    if dataclasses and dataclasses.is_dataclass(o):
        return dataclasses.asdict(o)  # type: ignore[arg-type]

    if hasattr(o, "__html__"):
        return str(o.__html__())

    raise TypeError(f"Object of type {type(o).__name__} is not JSON serializable")