v4.17.0

• The check_schema method on jsonschema.protocols.Validator instances now enables format validation by default when run. This can catch some additional invalid schemas (e.g. containing invalid regular expressions) where the issue is indeed uncovered by validating against the metaschema with format validation enabled as an assertion.
• The jsonschema CLI (along with jsonschema.cli the module) are now deprecated. Use check-jsonschema instead, which can be installed via pip install check-jsonschema and found here.
• Make ErrorTree have a more grammatically correct repr.

Full Changelog: v4.16.0...v4.17.0

v4.16.0

• Improve the base URI behavior when resolving a $ref to a resolution URI
  which is different from the resolved schema's declared $id.
• Accessing jsonschema.draftN_format_checker is deprecated. Instead, if you
  want access to the format checker itself, it is exposed as
  jsonschema.validators.DraftNValidator.FORMAT_CHECKER on any
  jsonschema.protocols.Validator.

Full Changelog: v4.15.0...v4.16.0

v4.15.0

What's Changed

• Enable dedicated API documentation page(s) by @Julian in #989

Full Changelog: v4.14.0...v4.15.0

v4.14.0

• FormatChecker.cls_checks is deprecated. Use FormatChecker.checks on
  an instance of FormatChecker instead.
• unevaluatedItems has been fixed for draft 2019. It's nonetheless
  discouraged to use draft 2019 for any schemas, new or old.
• Fix a number of minor annotation issues in protocols.Validator

Full Changelog: v4.13.0...v4.14.0

v4.13.0

• Add support for creating validator classes whose metaschema uses a different
  dialect than its schemas. In other words, they may use draft2020-12 to define
  which schemas are valid, but the schemas themselves use draft7 (or a custom
  dialect, etc.) to define which instances are valid. Doing this is likely
  not something most users, even metaschema authors, may need, but occasionally
  will be useful for advanced use cases.

Full Changelog: v4.12.1...v4.13.0

v4.12.1

What's Changed

• Use rST markers in README by @hynek in #987

Full Changelog: v4.12.0...v4.12.1

v4.12.0

• Warn at runtime when subclassing validator classes. Doing so was not
  intended to be public API, though it seems some downstream libraries
  do so. A future version will make this an error, as it is brittle and
  better served by composing validator objects instead. Feel free to reach
  out if there are any cases where changing existing code seems difficult
  and I can try to provide guidance.

Full Changelog: v4.11.0...v4.12.0

v4.11.0

What's Changed

• jsonschema deserves a ✨fancy✨ readme by @hynek in #983

Full Changelog: v4.10.3...v4.11.0

v4.10.3

• jsonschema.validators.validator_for now properly uses the explicitly
  provided default validator even if the $schema URI is not found.

Full Changelog: v4.10.2...v4.10.3

v4.10.2

• Fix a second place where subclasses may have added attrs attributes (#982).

Full Changelog: v4.10.1...v4.10.2