Make any type JSON-serializable
Make any type JSON-serializable.
A Python module which makes json.dumps work with several builtin and stdlib types. A hook for registering any custom type is also provided.
Simply install alljson with pip or add it to your project dependencies:
pip install alljson
After installing, the following types are JSON-serializable:
- set and frozenset
- dict item/key/value iterators and views
- datetime.date and datetime.datetime (as strings in ISO format)
- decimal.Decimal (serialized as string in order to preserve precision)
- reversed results
In addition to these, the following Python 3 types are supported:
- map, filter, range iterators
- classes implementing Sequence and Mapping abc interfaces
Registering custom types
In order to register a new type, use alljson.register_encoder(type, encoder_function). encoder_function should take object of given type as the only parameter and return a simple JSON-serializable Python value (such as dict or str).
import arrow import alljson alljson.register_encoder(arrow.Arrow, arrow.Arrow.isoformat)
- pth trick was stolen from delightful future-fstrings project
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