Douglas Creager eda85f3c64 [ty] Constraining a typevar with itself (possibly via union or intersection) (#21273) ... This PR carries over some of the `has_relation_to` logic for comparing a typevar with itself. A typevar will specialize to the same type if it's mentioned multiple times, so it is always assignable to and a subtype of itself. (Note that typevars can only specialize to fully static types.) This is also true when the typevar appears in a union on the right-hand side, or in an intersection on the left-hand side. Similarly, a typevar is always disjoint from its negation, so when a negated typevar appears on the left-hand side, the constraint set is never satisfiable. (Eventually this will allow us to remove the corresponding clauses from `has_relation_to`, but that can't happen until more of #20093 lands.)		2025-11-05 12:31:53 -05:00
..
annotations	[ty] Implicit type aliases: Support for PEP 604 unions (#21195)	2025-11-03 21:50:25 +01:00
assignment	[ty] support subscripting typing.Literal with a type alias (#21207)	2025-11-02 12:39:55 -05:00
binary	[ty] Rename UnionType to types.UnionType (#21262)	2025-11-03 22:06:56 +01:00
boolean
boundness_declaredness	[ty] Reformulation of public symbol inference test suite (#20667)	2025-10-01 14:26:17 +02:00
call	[ty] dict is not assignable to TypedDict (#21238)	2025-11-03 16:57:49 -05:00
class	[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)	2025-10-27 11:19:12 +00:00
comparison	[ty] detect cycles in binary comparison inference (#20446)	2025-09-17 09:45:25 +02:00
comprehensions	[ty] dict is not assignable to TypedDict (#21238)	2025-11-03 16:57:49 -05:00
conditional
dataclasses	[ty] Use "cannot" consistently over "can not" (#21255)	2025-11-03 10:38:20 -05:00
declaration
diagnostics	[ty] continue and break statements outside loops are syntax errors (#20944)	2025-10-17 17:13:40 +00:00
directives	[ty] Use annotated parameters as type context (#20635)	2025-10-03 17:14:51 -04:00
doc
exception	[ty] Filter out revealed-type and undefined-reveal diagnostics from mdtest snapshots (#20820)	2025-10-12 18:39:32 +00:00
expression	[ty] Use "cannot" consistently over "can not" (#21255)	2025-11-03 10:38:20 -05:00
function	[ty] don't union in default type for annotated parameters (#21208)	2025-11-02 18:21:54 -05:00
generics	[ty] Simplify unions containing multiple type variables during inference (#21275)	2025-11-05 15:03:19 +00:00
ide_support	[ty] Use "cannot" consistently over "can not" (#21255)	2025-11-03 10:38:20 -05:00
import	[ty] prefer submodule over module __getattr__ in from-imports (#21260)	2025-11-03 15:24:01 -05:00
literal	[ty] Type inference for comprehensions (#20962)	2025-11-02 14:35:33 +01:00
loops	[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)	2025-10-27 11:19:12 +00:00
narrow	[ty] Implicit type aliases: Support for PEP 604 unions (#21195)	2025-11-03 21:50:25 +01:00
regression	[ty] Fix panic due to simplifying Divergent types out of intersections types (#21253)	2025-11-03 15:41:11 +00:00
scopes	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
shadowing
snapshots	[ty] dict is not assignable to TypedDict (#21238)	2025-11-03 16:57:49 -05:00
stubs	[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)	2025-10-27 11:19:12 +00:00
subscript	[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)	2025-10-27 11:19:12 +00:00
suppressions	[ty] Add suggestion to unknown rule diagnostics, rename unknown-rule lint to ignore-comment-unknown-rule (#20948)	2025-10-18 12:44:21 +02:00
type_compendium	[ty] Use "cannot" consistently over "can not" (#21255)	2025-11-03 10:38:20 -05:00
type_of	[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)	2025-10-27 11:19:12 +00:00
type_properties	[ty] Constraining a typevar with itself (possibly via union or intersection) (#21273)	2025-11-05 12:31:53 -05:00
type_qualifiers	[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)	2025-10-27 11:19:12 +00:00
unary
with	[ty] Use typing.Self for the first parameter of instance methods (#20517)	2025-09-29 21:08:08 +02:00
.mdformat.toml
async.md
attributes.md	[ty] Use "cannot" consistently over "can not" (#21255)	2025-11-03 10:38:20 -05:00
bidirectional.md	[ty] dict is not assignable to TypedDict (#21238)	2025-11-03 16:57:49 -05:00
classes.md	[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)	2025-10-27 11:19:12 +00:00
cycle.md	[ty] Avoid ever-growing default types (#20991)	2025-10-21 19:13:36 +02:00
decorators.md
del.md	[ty] No union with Unknown for module-global symbols (#20664)	2025-10-01 16:40:30 +02:00
deprecated.md
descriptor_protocol.md	[ty] Infer type for implicit self parameters in method bodies (#20922)	2025-10-23 09:34:39 +02:00
enums.md	[ty] Enums: allow multiple aliases to point to the same member (#20669)	2025-10-01 15:51:53 +02:00
exhaustiveness_checking.md	[ty] Improve exhaustiveness analysis for type variables with bounds or constraints (#21172)	2025-10-31 16:51:11 -04:00
final.md
implicit_type_aliases.md	[ty] Allow values of type None in type expressions (#21263)	2025-11-04 16:29:55 +01:00
instance_layout_conflict.md	[ty] initial support for slots=True in dataclasses (#20278)	2025-09-07 18:25:35 +01:00
intersection_types.md	[ty] Use "cannot" consistently over "can not" (#21255)	2025-11-03 10:38:20 -05:00
invalid_syntax.md
known_constants.md
literal_promotion.md	[ty] Do not promote literals in contravariant positions of generic specializations (#21171)	2025-10-31 17:48:34 +01:00
mdtest_config.md
mdtest_custom_typeshed.md
metaclass.md
mro.md	[ty] Rename UnionType to types.UnionType (#21262)	2025-11-03 22:06:56 +01:00
named_tuple.md	[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)	2025-10-27 11:19:12 +00:00
overloads.md	[ty] Infer type of self for decorated methods and properties (#21123)	2025-10-29 21:22:38 +00:00
pep613_type_aliases.md	[ty] Fall back to Divergent for deeply nested specializations (#20988)	2025-10-22 14:29:10 +02:00
pep695_type_aliases.md	[ty] Add cycle handling to lazy_default (#20967)	2025-10-23 10:05:08 +02:00
properties.md	[ty] "foo".startswith is not an instance of types.MethodWrapperType (#20317)	2025-09-10 11:14:26 +00:00
protocols.md	[ty] Fix bug where ty would think all types had an __mro__ attribute (#20995)	2025-10-27 11:19:12 +00:00
public_types.md	[ty] Disambiguate classes that live in different modules but have the same fully qualified names (#20756)	2025-10-08 18:27:40 +01:00
statically_known_branches.md	[ty] Rename "possibly unbound" diagnostics to "possibly missing" (#20492)	2025-09-23 14:26:55 +00:00
sys_platform.md
sys_version_info.md
t_strings.md	[ty] Add support for PEP 750 t-strings (#20085)	2025-08-25 18:49:49 +00:00
terminal_statements.md
ty_extensions.md	[ty] Use "cannot" consistently over "can not" (#21255)	2025-11-03 10:38:20 -05:00
typed_dict.md	[ty] dict is not assignable to TypedDict (#21238)	2025-11-03 16:57:49 -05:00
union_types.md	[ty] Introduce TypeRelation::Redundancy (#20602)	2025-10-03 18:35:30 +01:00
unpacking.md	[ty] Infer more precise types for collection literals (#20360)	2025-09-17 18:51:50 -04:00
unreachable.md	[ty] Use "cannot" consistently over "can not" (#21255)	2025-11-03 10:38:20 -05:00