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Document serialization of Decimal in JSONEncoder

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The Flask JSONEncoder serializes Decimal types to strings, but this
behavior is missing from the docs. The docs are updated accordingly.
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Ties Jan Hefting 2022-07-06 11:38:33 +02:00
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docs/api.rst
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@ -242,6 +242,7 @@ for easier customization. By default it handles some extra data types:
- :class:`datetime.datetime` and :class:`datetime.date` are serialized - :class:`datetime.datetime` and :class:`datetime.date` are serialized
to :rfc:`822` strings. This is the same as the HTTP date format. 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:`uuid.UUID` is serialized to a string.
- :class:`dataclasses.dataclass` is passed to - :class:`dataclasses.dataclass` is passed to
:func:`dataclasses.asdict`. :func:`dataclasses.asdict`.

1
src/flask/json/__init__.py
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@ -23,6 +23,7 @@ class JSONEncoder(_json.JSONEncoder):
- :class:`datetime.datetime` and :class:`datetime.date` are - :class:`datetime.datetime` and :class:`datetime.date` are
serialized to :rfc:`822` strings. This is the same as the HTTP serialized to :rfc:`822` strings. This is the same as the HTTP
date format. date format.
- :class:`decimal.Decimal` is serialized to a string.
- :class:`uuid.UUID` is serialized to a string. - :class:`uuid.UUID` is serialized to a string.
- :class:`dataclasses.dataclass` is passed to - :class:`dataclasses.dataclass` is passed to
:func:`dataclasses.asdict`. :func:`dataclasses.asdict`.