pydantic/pydantic-settings v2.16.1

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Highlights

This patch release fixes two CLI regressions introduced in 2.16.0.

Bug fixes

CLI

• Fixed-length tuple positionals such as CliPositionalArg[tuple[int, int]] and NamedTuples are single-valued again (#1069). Since 2.16.0 they were treated as variadic, so a CLI either refused to start with a SettingsError or put the wrong argument into the tuple. Variable-length tuples (tuple[int, ...] and bare Tuple) are still variadic.
• A field typed as an alias of a list of dicts, e.g. type ListOfDict = list[dict[str, int]], accepts a JSON list again (#1049). Since 2.16.0, --xx '[{"a":1},{"b":2}]' was merged into the single dict {"a": 1, "b": 2} and failed validation.