msgspec
msgspec is a fast and friendly serialization library for Python,
supporting both JSON and MessagePack. It integrates well with Python's type
annotations, providing ergonomic (and performant!) schema validation.
Define your message schemas using standard Python type annotations.
>>> from typing import Optional, Set
>>> import msgspec
>>> class User(msgspec.Struct):
... """A new type describing a User"""
... name: str
... groups: Set[str] = set()
... email: Optional[str] = NoneEncode messages as JSON or MessagePack.
>>> alice = User("alice", groups={"admin", "engineering"})
>>> alice
User(name='alice', groups={"admin", "engineering"}, email=None)
>>> msg = msgspec.json.encode(alice)
>>> msg
b'{"name":"alice","groups":["admin","engineering"],"email":null}'Decode messages back into Python types (with optional schema validation).
>>> msgspec.json.decode(msg, type=User)
User(name='alice', groups={"admin", "engineering"}, email=None)
>>> msgspec.json.decode(b'{"name":"bob","groups":[123]}', type=User)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
msgspec.ValidationError: Expected `str`, got `int` - at `$.groups[0]`msgspec is designed to be as performant as possible, while retaining some
of the nicities of validation libraries like pydantic. For supported types,
encoding/decoding a message with msgspec can be ~2-40x faster than
alternative libraries.
See the documentation for more information.
LICENSE
New BSD. See the License File.
