flask.json.JSONEncoder

class documentation

class JSONEncoder(_json.JSONEncoder): (source)

The default JSON encoder. Handles extra types compared to the built-in :class:`json.JSONEncoder`. - :class:`datetime.datetime` and :class:`datetime.date` are serialized to :rfc:`822` strings. This is the same as the HTTP date format. - :class:`decimal.Decimal` is serialized to a string. - :class:`uuid.UUID` is serialized to a string. - :class:`dataclasses.dataclass` is passed to :func:`dataclasses.asdict`. - :class:`~markupsafe.Markup` (or any object with a ``__html__`` method) will call the ``__html__`` method to get a string. Assign a subclass of this to :attr:`flask.Flask.json_encoder` or :attr:`flask.Blueprint.json_encoder` to override the default. .. deprecated:: 2.2 Will be removed in Flask 2.3. Use ``app.json`` instead.

Method	`__init__`	Undocumented
Method	`default`	Convert ``o`` to a JSON serializable type. See :meth:`json.JSONEncoder.default`. Python does not support overriding how basic types like ``str`` or ``list`` are serialized, they are handled before this method.

def __init__(self, **kwargs): (source) ¶

Undocumented

def default(self, o: t.Any) -> t.Any: (source) ¶

Convert ``o`` to a JSON serializable type. See :meth:`json.JSONEncoder.default`. Python does not support overriding how basic types like ``str`` or ``list`` are serialized, they are handled before this method.