ref(typing): drop redundant casts in resolve_measurement_value#113933
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ref(typing): drop redundant casts in resolve_measurement_value#113933
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Bumps the mypy pin to 1.20.1. Prep PRs for the bulk class-level-attribute fixes have already merged; what remains here is the pin bump, the `GroupType` ClassVar + `__init_subclass__` migration, a handful of small typing cleanups, and targeted `# type: ignore` comments for cases that will get proper fixes in the follow-up PRs below. ### Prep PRs (already merged) - #113422 — `ref(typing)`: `RegressionDetector` + `AttributeHandler` → `ClassVar` - #113423 — `ref(issues)`: `GroupType` → `ClassVar` + move validation to `__init_subclass__` - #113424 — `fix(typing)`: `group_status` args are `int`, not `GroupStatus` - #113427 — `test(typing)`: refetch via queryset instead of `refresh_from_db` after narrowing - #113428 — `test(typing)`: misc test-side type hint fixes ### What's in this PR - Bump `mypy>=1.19.1` → `mypy>=1.20.1` (+ `uv.lock`) - Drop the now-stale `kombu.*` entry from `[[tool.mypy.overrides]]` - `src/sentry/issues/grouptype.py` — convert `GroupType` fields to `ClassVar` and move the category-validation check from the dead `__post_init__` into `__init_subclass__`. Plus the corresponding test updates in `tests/sentry/issues/test_grouptype.py` and `tests/sentry/workflow_engine/endpoints/test_validators.py`. - Small typing fixes that don't change runtime behavior: - `digests/backends/base.py` — widen options map to `Mapping[str, Any]` - `discover/compare_timeseries.py` — heterogeneous mismatches dict typed as `dict[int, dict[str, Any]]` - `explore/endpoints/explore_saved_queries.py` — drop unused `# type: ignore` - `tests/sentry/incidents/test_logic.py` — stringify both sides of the `target_identifier` comparison so mypy stops flagging it as unreachable - Targeted `# type: ignore` on six files where the proper fix is being landed as a follow-up PR (see below) - `.github/workflows/scripts/bootstrap-snuba.py` — `# type: ignore[arg-type]` on `int(workers_str)` (single-file mypy can't see through `sys.exit`; follow-up can replace with `NoReturn`) ### Follow-up PRs (drafts, based on this branch) Each one removes one of the `# type: ignore` comments and applies the proper fix. They'll merge after this lands. - #113927 — `fix(typing)`: narrow `organization_id` in `from_auth` - #113928 — `fix(typing)`: guard None options in `ReconnectingMemcache` - #113929 — `docs(typing)`: annotate the `save_team_assignments` ignore with a FIXME - #113930 — `ref(typing)`: drop redundant cast in trace metric search type - #113932 — `ref(typing)`: drop redundant cast on `TraceMetric.metric_type` - #113933 — `ref(typing)`: drop redundant casts in `resolve_measurement_value` ### Performance | version | cold | warm | |---|---|---| | 1.19.1 | 49.22s | 17.82s | | 1.20.1 | 39.04s | 5.73s | ### CI expectation - `mypy` job: clean (0 errors) - `uv` jobs: resolve against `pypi.devinfra.sentry.io` (1.20.1 has been published there)
mypy 1.20.1 narrows `unit` via the `in SIZE_UNITS` / `in DURATION_UNITS` membership checks, making the `cast(SizeUnit/DurationUnit, unit)` calls redundant. Drop both along with the `# type: ignore[redundant-cast]` #113419 parked on each line. Agent transcript: https://claudescope.sentry.dev/share/D5BcySnDeVsi_TvpdsbF4DnHgDCKeoLRjrK-4DBQaMA
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Summary
Drop the two `cast(...)` calls in `BaseQueryBuilder.resolve_measurement_value` — mypy 1.20.1 narrows `unit` via `in SIZE_UNITS / DURATION_UNITS` membership, so both casts are redundant under the new pin. Removes the pair of `# type: ignore[redundant-cast]` comments #113419 parked on these lines.
Drafted because it depends on #113419.
Test plan
Agent transcript: https://claudescope.sentry.dev/share/9knBZJ8vsizIvYD0SEHZTCEVeYi3SKsV51XS1gS1L0k