feat(block-kit): add carousel block example - #97
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Add a Python Block Kit example for the carousel block, mirroring the official docs example: a carousel of three cards, each with an icon, title, subtitle, hero image, body, and an action button. Includes a test asserting the produced block matches the expected payload, and a README bullet linking the reference and implementation. Ref: https://docs.slack.dev/reference/block-kit/blocks/carousel-block Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
CardBlock.icon and hero_image take Block Kit image element objects per the card block reference (type/image_url/alt_text), but slack_sdk types them as str | None, so ImageElement args trip mypy [arg-type]. Add # type: ignore[arg-type] on each, matching the card example. (slack_sdk typing bug — tracked separately.) Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
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Examples should not carry type-checker suppressions. Remove the # type: ignore[arg-type] added for the ImageElement icon/hero_image args. Until slackapi/python-slack-sdk#1937 lands (widening CardBlock.icon / hero_image to accept an image element), mypy reports [arg-type] here by design — the honest signal that slack_sdk mis-types these fields as str. Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
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The example builds → slackapi/python-slack-sdk#1937 widens those params to accept an image element. Once #1937 lands and releases, this PR's mypy step goes green with no code change here. Tracking so it's not merged/forgotten in the red state. |
Co-Authored-By: Claude <svc-devxp-claude@slack-corp.com>
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Summary
Adds a Python Block Kit example for the carousel block, mirroring the official docs example.
example01()builds a carousel of three cards, each with an icon, title, subtitle, hero image, body, and an action button — matching the reference JSON exactly.block-kit/src/blocks/carousel.py—example01()returning aCarouselBlockofCardBlocksblock-kit/tests/blocks/test_carousel.py— asserts the produced block deep-equals the expected payloadblock-kit/README.md— adds the Carousel bullet (alphabetical) with docs + implementation linksDocs: https://docs.slack.dev/reference/block-kit/blocks/carousel-block
Validation
Run in
block-kit/against the pinnedslack_sdk==3.42.0/pytest==9.1.1/ruff==0.15.20:pytest -q— 33 passed (full suite, including newtest_carousel.py)ruff check src/blocks/carousel.py tests/blocks/test_carousel.py— all checks passedruff format --check ...— 2 files already formattedNote: this is a sample app repo with no
.changeset/, so no changeset was added.Co-Authored-By: Claude svc-devxp-claude@slack-corp.com
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