Alex Waygood a3f3d734a1 [red-knot] Ban list literals in most contexts in type expressions (#16847) ... ## Summary This PR reworks `TypeInferenceBuilder::infer_type_expression()` so that we emit diagnostics when encountering a list literal in a type expression. The only place where a list literal is allowed in a type expression is if it appears as the first argument to `Callable[]`, and `Callable` is already heavily special-cased in our type-expression parsing. In order to ensure that list literals are _always_ allowed as the _first_ argument to `Callabler` (but never allowed as the second, third, etc. argument), I had to do some refactoring of our type-expression parsing for `Callable` annotations. ## Test Plan New mdtests added, and existing ones updated		2025-03-19 14:42:42 +00:00
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annotations	[red-knot] Ban list literals in most contexts in type expressions (#16847)	2025-03-19 14:42:42 +00:00
assignment	[red-knot] Use try_call_dunder for augmented assignment (#16717)	2025-03-14 20:36:09 +01:00
binary	[red-knot] Handle unions of callables better (#16716)	2025-03-17 10:35:52 -04:00
boolean	[red-knot] Statically known branches (#15019)	2024-12-21 11:33:10 +01:00
boundness_declaredness	[red-knot] detect invalid return type (#16540)	2025-03-12 01:58:59 +00:00
call	[red-knot] Handle unions of callables better (#16716)	2025-03-17 10:35:52 -04:00
comparison	[red-knot] Handle unions of callables better (#16716)	2025-03-17 10:35:52 -04:00
comprehensions	[red-knot] detect invalid return type (#16540)	2025-03-12 01:58:59 +00:00
conditional	[red-knot] Handle unions of callables better (#16716)	2025-03-17 10:35:52 -04:00
declaration	[red-knot] Avoid undeclared path when raising conflicting declarations (#14958)	2024-12-17 09:49:39 +05:30
diagnostics	[red-knot] Document current state of attribute assignment diagnostics (#16746)	2025-03-14 20:34:43 +01:00
directives	[red-knot] Emit error if int/float/complex/bytes/boolean literals appear in type expressions outside typing.Literal[] (#16765)	2025-03-17 11:56:16 +00:00
doc	[red-knot] Document 'public type of undeclared symbols' behavior (#16096)	2025-02-12 08:52:11 +01:00
exception	[red-knot] MDTest: Use custom class names instead of builtins (#16269)	2025-02-20 12:25:55 +00:00
expression	[red-knot] Infer lambda return type as Unknown (#16695)	2025-03-18 22:48:10 +05:30
function	[red-knot] remove redundant sentence in test (#16660)	2025-03-12 04:20:31 +00:00
generics	[red-knot] handle cycles in MRO/bases resolution (#16693)	2025-03-13 08:16:03 -07:00
import	[red-knot] Case sensitive module resolver (#16521)	2025-03-14 19:16:44 +00:00
literal	[red-knot] Migrate bool/str/repr unit tests to Markdown tests (#15534)	2025-01-16 11:21:56 -08:00
loops	[red-knot] Handle unions of callables better (#16716)	2025-03-17 10:35:52 -04:00
narrow	[red-knot] detect invalid return type (#16540)	2025-03-12 01:58:59 +00:00
regression	[red-knot] Enforce specifying paths for mdtest code blocks in a separate preceding line (#15890)	2025-02-04 08:27:17 +01:00
scopes	[red-knot] Attribute access and the descriptor protocol (#16416)	2025-03-07 22:03:28 +01:00
shadowing	[red-knot] Merge Markdown code blocks inside a single section (#15950)	2025-02-05 22:26:15 +01:00
snapshots	red_knot: update diagnostic output snapshots	2025-03-17 12:46:49 -04:00
stubs	[red-knot] Attribute access and the descriptor protocol (#16416)	2025-03-07 22:03:28 +01:00
subscript	[red-knot] detect invalid return type (#16540)	2025-03-12 01:58:59 +00:00
suppressions	[red-knot] Attribute access and the descriptor protocol (#16416)	2025-03-07 22:03:28 +01:00
type_of	[red-knot] Method calls and the descriptor protocol (#16121)	2025-02-20 23:22:26 +01:00
type_properties	[red-knot] Fix fully static check for callable type (#16803)	2025-03-17 20:01:30 +05:30
type_qualifiers	[red-knot] Preliminary tests for typing.Final (#15917)	2025-03-14 12:30:13 +01:00
unary	[red-knot] Handle unions of callables better (#16716)	2025-03-17 10:35:52 -04:00
with	[red-knot] detect invalid return type (#16540)	2025-03-12 01:58:59 +00:00
.mdformat.toml	[red-knot] have mdformat wrap mdtest files to 100 columns (#14020)	2024-10-31 21:00:51 +00:00
attributes.md	[red-knot] Assignments to attributes (#16705)	2025-03-14 12:15:41 +01:00
descriptor_protocol.md	[red-knot] Assignments to attributes (#16705)	2025-03-14 12:15:41 +01:00
final.md	[red-knot] Add support for @final classes (#15070)	2024-12-19 21:02:14 +00:00
intersection_types.md	[red-knot] Make' Type::in_type_expression()' exhaustive for Type::KnownInstance (#16836)	2025-03-19 07:36:28 -07:00
invalid_syntax.md	[red-knot] Understand typing.Callable (#16493)	2025-03-08 03:58:52 +00:00
known_constants.md	[red-knot] Add rule invalid-type-checking-constant (#16501)	2025-03-04 19:49:34 +00:00
mdtest_config.md	[red-knot] Add missing imports in mdtests (#15869)	2025-02-03 09:27:29 +00:00
mdtest_custom_typeshed.md	[red-knot] Enforce specifying paths for mdtest code blocks in a separate preceding line (#15890)	2025-02-04 08:27:17 +01:00
metaclass.md	[red-knot] detect invalid return type (#16540)	2025-03-12 01:58:59 +00:00
mro.md	[red-knot] Enforce specifying paths for mdtest code blocks in a separate preceding line (#15890)	2025-02-04 08:27:17 +01:00
pep695_type_aliases.md	[red-knot] Move type_alias_types test to Markdown (#15607)	2025-01-20 09:55:54 +01:00
protocols.md	[red-knot] Make' Type::in_type_expression()' exhaustive for Type::KnownInstance (#16836)	2025-03-19 07:36:28 -07:00
slots.md	[red-knot] fix: improve type inference for binary ops on tuples (#16725)	2025-03-14 12:29:57 +01:00
statically_known_branches.md	[red-knot] Litate tests: minor follow-up (#15987)	2025-02-06 07:15:26 +00:00
sys_platform.md	[red-knot] Method calls and the descriptor protocol (#16121)	2025-02-20 23:22:26 +01:00
sys_version_info.md	[red-knot] Merge Markdown code blocks inside a single section (#15950)	2025-02-05 22:26:15 +01:00
terminal_statements.md	[red-knot] detect invalid return type (#16540)	2025-03-12 01:58:59 +00:00
type_api.md	[red-knot] Make' Type::in_type_expression()' exhaustive for Type::KnownInstance (#16836)	2025-03-19 07:36:28 -07:00
union_types.md	[red-knot] add special case for float/complex (#16166)	2025-02-14 12:24:10 -08:00
unpacking.md	[red-knot] Support unpacking with target (#16469)	2025-03-08 02:36:35 +00:00