Changelog

6.0.0

(break): The Python SDK generator reads configuration from sdk-config.yml instead of generators.yml. Run fern sdk migrate to create sdk-config.yml from your existing configuration. 6.0.0 is also the minimum version for generating Python SDK Config targets locally.

This release changes the generated SDK. See the Python v6 migration guide for details and code updates:

• Models and errors are imported from .models and .errors.
• request_options becomes request_config.
• Pagers no longer expose a page object.
• The client uses requests, and two constructor parameters are removed.
• Timeouts and connection failures raise SDK errors.
• Undeclared enum values raise a validation error.
• Array parameters are serialized in their declared style.
• Retries are configured with a retry dict.
• Multipart uploads can’t set the part filename.
• Server-sent events are parsed frame by frame.
• Each security scheme has a constructor parameter, and resource clients have their own credential setters.
• File downloads return bytes.
• Each declared status has its own response type.
• Text and XML request bodies are sent.
• Cookie parameters are method arguments.
• OAuth client credentials are handled by the client.
• Configuration can be scoped.
• Models are mutable.
• Raw responses are available on every client and page.
• WebSocket channels change: the environment has no socket addresses, the credential isn’t read from an environment variable, some connect parameter types change, control-frame types are merged, and received frames are typed.