Anthropic

Full Changelog: [v0.8.1...v0.9.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.8.1...v0.9.0)

Features

* add `None` default value to nullable response properties ([299](https://github.com/anthropics/anthropic-sdk-python/issues/299)) ([da423db](https://github.com/anthropics/anthropic-sdk-python/commit/da423db5c14b213c52fe0986981c4f01aff0d2c3))


Bug Fixes

* **client:** correctly use custom http client auth ([296](https://github.com/anthropics/anthropic-sdk-python/issues/296)) ([6289d6e](https://github.com/anthropics/anthropic-sdk-python/commit/6289d6e205f872c02114f05333d5426055f2416f))


Chores

* add .keep files for examples and custom code directories ([302](https://github.com/anthropics/anthropic-sdk-python/issues/302)) ([73a07ea](https://github.com/anthropics/anthropic-sdk-python/commit/73a07ea7a5254d205b68e25c46c1f2267604ac9b))
* **internal:** loosen type var restrictions ([301](https://github.com/anthropics/anthropic-sdk-python/issues/301)) ([5e5e1e7](https://github.com/anthropics/anthropic-sdk-python/commit/5e5e1e716a8732af66e2234307521b4620b07361))
* **internal:** replace isort with ruff ([298](https://github.com/anthropics/anthropic-sdk-python/issues/298)) ([7c60904](https://github.com/anthropics/anthropic-sdk-python/commit/7c60904f5da10c4ef6ab8af4e8631bc938b35131))
* use property declarations for resource members ([300](https://github.com/anthropics/anthropic-sdk-python/issues/300)) ([8671297](https://github.com/anthropics/anthropic-sdk-python/commit/8671297b87105635accefd574c44dbffd8a4f9e9))

Full Changelog: [v0.8.0...v0.8.1](https://github.com/anthropics/anthropic-sdk-python/compare/v0.8.0...v0.8.1)

Chores

* **internal:** add bin script ([292](https://github.com/anthropics/anthropic-sdk-python/issues/292)) ([ba2953d](https://github.com/anthropics/anthropic-sdk-python/commit/ba2953dcaa8a8fcebaa7e8891304687c95b17499))
* **internal:** fix typos ([287](https://github.com/anthropics/anthropic-sdk-python/issues/287)) ([4ffbcdf](https://github.com/anthropics/anthropic-sdk-python/commit/4ffbcdf1d3c8c2fbaf7152d207b24cdb0ea82ac9))
* **internal:** use ruff instead of black for formatting ([294](https://github.com/anthropics/anthropic-sdk-python/issues/294)) ([1753887](https://github.com/anthropics/anthropic-sdk-python/commit/1753887a776f41bdc2d648329cfe6f20c91125e5))
* **package:** bump minimum typing-extensions to 4.7 ([290](https://github.com/anthropics/anthropic-sdk-python/issues/290)) ([9ec5c57](https://github.com/anthropics/anthropic-sdk-python/commit/9ec5c57ba9a14a769d540e48755b05a1c190b45b))


Documentation

* **messages:** improvements to helpers reference + typos ([291](https://github.com/anthropics/anthropic-sdk-python/issues/291)) ([d18a895](https://github.com/anthropics/anthropic-sdk-python/commit/d18a895d380fc0c6610443486d73247b0cd97376))
* **readme:** remove old migration guide ([289](https://github.com/anthropics/anthropic-sdk-python/issues/289)) ([eec4574](https://github.com/anthropics/anthropic-sdk-python/commit/eec4574f1f6668804c88bda67b901db10400fbc3))

Full Changelog: [v0.7.8...v0.8.0](https://github.com/anthropics/anthropic-sdk-python/compare/v0.7.8...v0.8.0)

Features

* **api:** add messages endpoint with streaming helpers ([286](https://github.com/anthropics/anthropic-sdk-python/issues/286)) ([c464b87](https://github.com/anthropics/anthropic-sdk-python/commit/c464b87b72ebbf9255418a02c627b0f0c52d03dd))


Chores

* **ci:** run release workflow once per day ([282](https://github.com/anthropics/anthropic-sdk-python/issues/282)) ([3a23912](https://github.com/anthropics/anthropic-sdk-python/commit/3a239127713c68ae53fa8b338e1f60ca25840a90))
* **client:** only import tokenizers when needed ([284](https://github.com/anthropics/anthropic-sdk-python/issues/284)) ([b9e38b2](https://github.com/anthropics/anthropic-sdk-python/commit/b9e38b2a2e2be2b5fb31842fa409b95abcbccbc6))
* **streaming:** update constructor to use direct client names ([285](https://github.com/anthropics/anthropic-sdk-python/issues/285)) ([0c55c84](https://github.com/anthropics/anthropic-sdk-python/commit/0c55c84ab3527199401f387fbc3338572b264fef))

Full Changelog: [v0.7.7...v0.7.8](https://github.com/anthropics/anthropic-sdk-python/compare/v0.7.7...v0.7.8)

Bug Fixes

* avoid leaking memory when Client.with_options is used ([275](https://github.com/anthropics/anthropic-sdk-python/issues/275)) ([5e51ebd](https://github.com/anthropics/anthropic-sdk-python/commit/5e51ebdbc6e5c23c8c237b5e0231ef66f585f964))
* **client:** correct base_url setter implementation ([265](https://github.com/anthropics/anthropic-sdk-python/issues/265)) ([29d0c8b](https://github.com/anthropics/anthropic-sdk-python/commit/29d0c8b0eb174b499a904e02cce7fe7a6aaa1a01))
* **client:** ensure retried requests are closed ([261](https://github.com/anthropics/anthropic-sdk-python/issues/261)) ([5d9aa75](https://github.com/anthropics/anthropic-sdk-python/commit/5d9aa754ace5d53eb90c1055dd6b1ca8e7deee4f))
* **errors:** properly assign APIError.body ([274](https://github.com/anthropics/anthropic-sdk-python/issues/274)) ([342846f](https://github.com/anthropics/anthropic-sdk-python/commit/342846fa4d424a4d18dd2289d2b652bf53c97901))


Chores

* **internal:** enable more lint rules ([273](https://github.com/anthropics/anthropic-sdk-python/issues/273)) ([0ac62bc](https://github.com/anthropics/anthropic-sdk-python/commit/0ac62bc127ddf0367561427836ff19c1272fb0e1))
* **internal:** reformat imports ([270](https://github.com/anthropics/anthropic-sdk-python/issues/270)) ([dc55724](https://github.com/anthropics/anthropic-sdk-python/commit/dc55724673dfa59911a05fe4827b8804beba0b05))
* **internal:** reformat imports ([272](https://github.com/anthropics/anthropic-sdk-python/issues/272)) ([0d82ce4](https://github.com/anthropics/anthropic-sdk-python/commit/0d82ce4784c3a6c9599e6c09b8190e97ea028dc3))
* **internal:** remove unused file ([264](https://github.com/anthropics/anthropic-sdk-python/issues/264)) ([1bfc69b](https://github.com/anthropics/anthropic-sdk-python/commit/1bfc69b0e2a1eb79598409cbfcba060f699d28a7))
* **internal:** replace string concatenation with f-strings ([263](https://github.com/anthropics/anthropic-sdk-python/issues/263)) ([f545c35](https://github.com/anthropics/anthropic-sdk-python/commit/f545c350dd802079d057d34ff29444e32dc7bdcb))
* **internal:** update formatting ([271](https://github.com/anthropics/anthropic-sdk-python/issues/271)) ([802ab59](https://github.com/anthropics/anthropic-sdk-python/commit/802ab59401b06986b8023e9ef0d0f9e0d6858b86))
* **package:** lift anyio v4 restriction ([266](https://github.com/anthropics/anthropic-sdk-python/issues/266)) ([a217e99](https://github.com/anthropics/anthropic-sdk-python/commit/a217e9955569852d35ab1bc1351dd66ba807fc44))


Documentation

* update examples to show claude-2.1 ([276](https://github.com/anthropics/anthropic-sdk-python/issues/276)) ([8f562f4](https://github.com/anthropics/anthropic-sdk-python/commit/8f562f47f13ffaaab93f08b9b4c59d06e4a18b6c))


Refactors

* **client:** simplify cleanup ([278](https://github.com/anthropics/anthropic-sdk-python/issues/278)) ([3611ae2](https://github.com/anthropics/anthropic-sdk-python/commit/3611ae24d93fa33e55f2e9193a3c787bfd041da5))
* simplify internal error handling ([279](https://github.com/anthropics/anthropic-sdk-python/issues/279)) ([993b51a](https://github.com/anthropics/anthropic-sdk-python/commit/993b51aa4f41bae3938a12d60919065c4865a734))

Full Changelog: [v0.7.6...v0.7.7](https://github.com/anthropics/anthropic-sdk-python/compare/v0.7.6...v0.7.7)

Chores

* **internal:** add tests for proxy change ([260](https://github.com/anthropics/anthropic-sdk-python/issues/260)) ([3b52136](https://github.com/anthropics/anthropic-sdk-python/commit/3b521362f6ee33c3ff66371e4f2d3bdcea2827bb))
* **internal:** updates to proxy helper ([258](https://github.com/anthropics/anthropic-sdk-python/issues/258)) ([94c4de8](https://github.com/anthropics/anthropic-sdk-python/commit/94c4de88b9d202d780c4dfbee6db138d7a663373))

Full Changelog: [v0.7.5...v0.7.6](https://github.com/anthropics/anthropic-sdk-python/compare/v0.7.5...v0.7.6)

Chores

* **deps:** bump mypy to v1.7.1 ([256](https://github.com/anthropics/anthropic-sdk-python/issues/256)) ([02d4ed8](https://github.com/anthropics/anthropic-sdk-python/commit/02d4ed8ae8e4fb9221fc9bfb5f45357ed239de5e))