David Peter 2dbca6370b [ty] Avoid ever-growing default types (#20991) ... ## Summary We currently panic in the seemingly rare case where the type of a default value of a parameter depends on the callable itself: ```py class C: def f(self: C): self.x = lambda a=self.x: a ``` Types of default values are only used for display reasons, and it's unclear if we even want to track them (or if we should rather track the actual value). So it didn't seem to me that we should spend a lot of effort (and runtime) trying to achieve a theoretically correct type here (which would be infinite). Instead, we simply replace *nested* default types with `Unknown`, i.e. only if the type of the default value is a callable itself. closes https://github.com/astral-sh/ty/issues/1402 ## Test Plan Regression tests		2025-10-21 19:13:36 +02:00
..
annotations	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
assignment	[ty] Prefer declared type for invariant collection literals (#20927)	2025-10-16 16:11:28 -04:00
binary	[ty] Sync vendored typeshed stubs (#20876)	2025-10-15 11:13:32 +02:00
boolean
boundness_declaredness	[ty] Reformulation of public symbol inference test suite (#20667)	2025-10-01 14:26:17 +02:00
call	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
class	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
comparison	[ty] detect cycles in binary comparison inference (#20446)	2025-09-17 09:45:25 +02:00
comprehensions
conditional
dataclasses	[ty] dataclass_transform: Support for fields with an alias (#20961)	2025-10-18 18:20:39 +00:00
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] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
function	[ty] Improve disambiguation of types via fully qualified names (#20141)	2025-08-29 08:44:18 +00:00
generics	[ty] Fix panic on recursive class definitions in a stub that use constrained type variables (#20955)	2025-10-18 13:02:55 +00:00
ide_support	[ty] Filter out revealed-type and undefined-reveal diagnostics from mdtest snapshots (#20820)	2025-10-12 18:39:32 +00:00
import	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
literal	[ty] Treat functions, methods, and dynamic types as function-like Callables (#20842)	2025-10-13 15:21:55 +02:00
loops	[ty] Heterogeneous unpacking support for unions (#20377)	2025-10-15 19:30:03 +01:00
narrow	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
regression
scopes	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
shadowing
snapshots	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
stubs	Update default and latest Python versions for 3.14 (#20725)	2025-10-07 12:23:11 -04:00
subscript	[ty] Rename "possibly unbound" diagnostics to "possibly missing" (#20492)	2025-09-23 14:26:55 +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] Heterogeneous unpacking support for unions (#20377)	2025-10-15 19:30:03 +01:00
type_of
type_properties	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
type_qualifiers	[ty] Allow annotation expressions to be ast::Attribute nodes (#20413)	2025-09-15 12:06:48 +01:00
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] Disable panicking mdtest (#21016)	2025-10-21 14:40:23 +02:00
bidirectional.md	[ty] bidirectional type inference using function return type annotations (#20528)	2025-10-11 00:38:35 +00:00
classes.md	[ty] don't assume that deferred type inference means deferred name resolution (#20160)	2025-08-29 16:19:45 -07:00
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] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
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] Fix subtyping for dynamic specializations (#20592)	2025-09-26 15:05:03 +02:00
final.md
implicit_type_aliases.md	[ty] no more diverging query cycles in type expressions (#20359)	2025-09-16 16:44:11 -07:00
instance_layout_conflict.md	[ty] initial support for slots=True in dataclasses (#20278)	2025-09-07 18:25:35 +01:00
intersection_types.md
invalid_syntax.md
known_constants.md
mdtest_config.md
mdtest_custom_typeshed.md
metaclass.md
mro.md	[ty] Filter out revealed-type and undefined-reveal diagnostics from mdtest snapshots (#20820)	2025-10-12 18:39:32 +00:00
named_tuple.md	[ty] Use typing.Self for the first parameter of instance methods (#20517)	2025-09-29 21:08:08 +02:00
overloads.md	[ty] Improve diagnostics for bad @overload definitions (#20745)	2025-10-07 21:52:57 +00:00
pep695_type_aliases.md	[ty] cache Type::is_redundant_with (#20477)	2025-10-16 13:46:56 +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 panic when attempting to validate the members of a protocol that inherits from a protocol in another module (#20956)	2025-10-18 15:01:46 +01:00
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] Simplify and fix CallableTypeOf[..] implementation (#20797)	2025-10-10 12:04:37 +02:00
typed_dict.md	[ty] Improve error messages for unresolved attribute diagnostics (#20963)	2025-10-19 10:58:25 +01:00
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] Rename "possibly unbound" diagnostics to "possibly missing" (#20492)	2025-09-23 14:26:55 +00:00