Cyclic0007/ruff
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[red-knot] Fix more edge cases for intersection simplification with LiteralString and AlwaysTruthy/AlwaysFalsy (#15496)

Browse Source
This commit is contained in:
Alex Waygood
2025-01-15 15:02:41 +00:00
committed by GitHub
parent 8712438aec
commit 55a7f72035
2 changed files with 130 additions and 109 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
crates/red_knot_python_semantic/resources/mdtest/intersection_types.md
View File

@@ -680,7 +680,7 @@ simplified, due to the fact that a `LiteralString` inhabitant is known to have `
exactly `str` (and not a subclass of `str`):
```py
from knot_extensions import Intersection, Not, AlwaysTruthy, AlwaysFalsy
from knot_extensions import Intersection, Not, AlwaysTruthy, AlwaysFalsy, Unknown
from typing_extensions import LiteralString
def f(
@@ -690,6 +690,10 @@ def f(
d: Intersection[LiteralString, Not[AlwaysFalsy]],
e: Intersection[AlwaysFalsy, LiteralString],
f: Intersection[Not[AlwaysTruthy], LiteralString],
g: Intersection[AlwaysTruthy, LiteralString],
h: Intersection[Not[AlwaysFalsy], LiteralString],
i: Intersection[Unknown, LiteralString, AlwaysFalsy],
j: Intersection[Not[AlwaysTruthy], Unknown, LiteralString],
):
reveal_type(a) # revealed: LiteralString & ~Literal[""]
reveal_type(b) # revealed: Literal[""]
@@ -697,6 +701,10 @@ def f(
reveal_type(d) # revealed: LiteralString & ~Literal[""]
reveal_type(e) # revealed: Literal[""]
reveal_type(f) # revealed: Literal[""]
reveal_type(g) # revealed: LiteralString & ~Literal[""]
reveal_type(h) # revealed: LiteralString & ~Literal[""]
reveal_type(i) # revealed: Unknown & Literal[""]
reveal_type(j) # revealed: Unknown & Literal[""]
```
## Addition of a type to an intersection with many non-disjoint types