David Peter af988bf866 [red-knot] Detect division-by-zero in unions and intersections (#17157) ... ## Summary With this PR, we emit a diagnostic for this case where previously didn't: ```py from typing import Literal def f(m: int, n: Literal[-1, 0, 1]): # error: [division-by-zero] "Cannot divide object of type `int` by zero" return m / n ``` ## Test Plan New Markdown test		2025-04-02 18:21:27 +02:00
..
annotations	[red-knot] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
assignment	[red-knot] Don't infer Todo for quite so many tuple type expressions (#17116)	2025-04-01 15:44:02 +01:00
binary	[red-knot] Detect division-by-zero in unions and intersections (#17157)	2025-04-02 18:21:27 +02:00
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] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
comparison	[red-knot] fix eager nested scopes handling (#16916)	2025-03-28 11:11:56 -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] Fix more redundant-cast false positives (#17119)	2025-04-01 19:03:42 +01:00
doc	[red-knot] Document 'public type of undeclared symbols' behavior (#16096)	2025-02-12 08:52:11 +01:00
exception	Fixing various spelling errors (#16924)	2025-03-23 08:08:40 +00:00
expression	[red-knot] Add initial support for * imports (#16923)	2025-03-24 17:15:58 +00:00
function	[red-knot] Fix _NotImplementedType check for Python >=3.10 (#17143)	2025-04-02 10:02:59 +00:00
generics	[red-knot] fix ordering of ClassDef semantic index building (#16915)	2025-03-23 13:23:12 +00:00
import	[red-knot] Fix panic on cyclic * imports (#16958)	2025-03-24 18:23:02 +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] Narrowing on in tuple[...] and in str (#17059)	2025-03-31 23:38:09 +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] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
shadowing	[red-knot] Merge Markdown code blocks inside a single section (#15950)	2025-02-05 22:26:15 +01:00
snapshots	[red-knot] fix eager nested scopes handling (#16916)	2025-03-28 11:11:56 -04:00
stubs	Fixing more spelling errors (#16926)	2025-03-23 10:55:14 -07:00
subscript	[red-knot] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
suppressions	[red-knot] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
type_of	[red-knot] Method calls and the descriptor protocol (#16121)	2025-02-20 23:22:26 +01:00
type_properties	[red-knot] Move tuple containing Never tests (#17137)	2025-04-02 02:46:18 +00:00
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] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
decorators.md	[red-knot] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
descriptor_protocol.md	[red-knot] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
final.md	[red-knot] Add support for @final classes (#15070)	2024-12-19 21:02:14 +00:00
intersection_types.md	[red-knot] add test cases result in false positive errors (#16856)	2025-03-20 17:17:54 +00:00
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] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
properties.md	[red-knot] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
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] Decorators and properties (#17017)	2025-04-02 09:27:46 +02:00
terminal_statements.md	[red-knot] detect invalid return type (#16540)	2025-03-12 01:58:59 +00:00
type_api.md	[red-knot] Allow CallableTypeFromFunction to display the signatures of callable types that are not function literals (#17047)	2025-03-28 20:23:04 +00:00
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