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pydantic v1.6 Release Notes

Release Date: 2020-07-11 // almost 4 years ago

  • 👀 See Changelog.

    👍 Thank you to pydantic's sponsors: @matin, @tiangolo, @chdsbd, @jorgecarleitao, and 1 anonymous sponsor for their kind support.

    🔄 changes:

    • Modify validators for conlist and conset to not have always=True, #1682 by @samuelcolvin
    • ➕ add port check to AnyUrl (can't exceed 65536) ports are 16 insigned bits: 0 <= port <= 2**16-1 src: rfc793 header format, #1654 by @flapili
    • 0️⃣ Document default regex anchoring semantics, #1648 by @yurikhan
    • Use chain.from_iterable in class_validators.py. This is a faster and more idiomatic way of using itertools.chain.
      Instead of computing all the items in the iterable and storing them in memory, they are computed one-by-one and never
      stored as a huge list. This can save on both runtime and memory space, #1642 by @cool-RR
    • ➕ Add conset(), analogous to conlist(), #1623 by @patrickkwang
    • make pydantic errors (un)pickable, #1616 by @PrettyWood
    • 👍 Allow custom encoding for dotenv files, #1615 by @PrettyWood
    • Ensure SchemaExtraCallable is always defined to get type hints on BaseConfig, #1614 by @PrettyWood
    • ⚡️ Update datetime parser to support negative timestamps, #1600 by @mlbiche
    • ⚡️ Update mypy, remove AnyType alias for Type[Any], #1598 by @samuelcolvin
    • Adjust handling of root validators so that errors are aggregated from all failing root validators, instead of reporting on only the first root validator to fail, #1586 by @beezee
    • Make __modify_schema__ on Enums apply to the enum schema rather than fields that use the enum, #1581 by @therefromhere
    • Fix behavior of __all__ key when used in conjunction with index keys in advanced include/exclude of fields that are sequences, #1579 by @xspirus
    • 📄 Subclass validators do not run when referencing a List field defined in a parent class when each_item=True. Added an example to the docs illustrating this, #1566 by @samueldeklund
    • change schema.field_class_to_schema to support frozenset in schema, #1557 by @wangpeibao
    • Call __modify_schema__ only for the field schema, #1552 by @PrettyWood
    • 🚚 Move the assignment of field.validate_always in fields.py so the always parameter of validators work on inheritance, #1545 by @dcHHH
    • ➕ Added support for UUID instantiation through 16 byte strings such as b'\x12\x34\x56\x78' * 4. This was done to support BINARY(16) columns in sqlalchemy, #1541 by @shawnwall
    • ➕ Add a test assertion that default_factory can return a singleton, #1523 by @therefromhere
    • Add NameEmail. __eq__ so duplicate NameEmail instances are evaluated as equal, #1514 by @stephen-bunn
    • ➕ Add datamodel-code-generator link in pydantic document site, #1500 by @koxudaxi
    • ➕ Added a "Discussion of Pydantic" section to the documentation, with a link to "Pydantic Introduction" video by Alexander Hultnér, #1499 by @Hultner
    • 0️⃣ Avoid some side effects of default_factory by calling it only once
      0️⃣ if possible and by not setting a default value in the schema, #1491 by @PrettyWood
    • ➕ Added docs about dumping dataclasses to JSON, #1487 by @mikegrima
    • Make BaseModel. __signature__ class-only, so getting __signature__ from model instance will raise AttributeError, #1466 by @MrMrRobat
    • include 'format': 'password' in the schema for secret types, #1424 by @Atheuz
    • Modify schema constraints on ConstrainedFloat so that exclusiveMinimum and
      minimum are not included in the schema if they are equal to -math.inf and
      exclusiveMaximum and maximum are not included if they are equal to math.inf, #1417 by @vdwees
    • Squash internal __root__ dicts in .dict() (and, by extension, in .json()), #1414 by @patrickkwang
    • 🚚 Move const validator to post-validators so it validates the parsed value, #1410 by @selimb
    • 🛠 Fix model validation to handle nested literals, e.g. Literal['foo', Literal['bar']], #1364 by @DBCerigo
    • ✂ Remove user_required = True from RedisDsn, neither user nor password are required, #1275 by @samuelcolvin
    • ✂ Remove extra allOf from schema for fields with Union and custom Field, #1209 by @mostaphaRoudsari
    • ⚡️ Updates OpenAPI schema generation to output all enums as separate models.
      Instead of inlining the enum values in the model schema, models now use a $ref
      property to point to the enum definition, #1173 by @calvinwyoung