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[ty] Remove special casing for tuple addition (#19636)
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Alex Waygood 2025-07-30 17:25:42 +01:00 • committed by GitHub
parent 38049aae12
commit 7b4103bcb6
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6 changed files with 58 additions and 29 deletions
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26
crates/ty_python_semantic/resources/mdtest/binary/tuples.md
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@ -3,14 +3,14 @@
## Concatenation for heterogeneous tuples
```py
reveal_type((1, 2) + (3, 4)) # revealed: tuple[Literal[1], Literal[2], Literal[3], Literal[4]]
reveal_type(() + (1, 2)) # revealed: tuple[Literal[1], Literal[2]]
reveal_type((1, 2) + ()) # revealed: tuple[Literal[1], Literal[2]]
reveal_type((1, 2) + (3, 4)) # revealed: tuple[Literal[1, 2, 3, 4], ...]
reveal_type(() + (1, 2)) # revealed: tuple[Literal[1, 2], ...]
reveal_type((1, 2) + ()) # revealed: tuple[Literal[1, 2], ...]
reveal_type(() + ()) # revealed: tuple[()]
def _(x: tuple[int, str], y: tuple[None, tuple[int]]):
reveal_type(x + y) # revealed: tuple[int, str, None, tuple[int]]
reveal_type(y + x) # revealed: tuple[None, tuple[int], int, str]
reveal_type(x + y) # revealed: tuple[int | str | None | tuple[int], ...]
reveal_type(y + x) # revealed: tuple[None | tuple[int] | int | str, ...]
```
## Concatenation for homogeneous tuples
@ -19,10 +19,10 @@ def _(x: tuple[int, str], y: tuple[None, tuple[int]]):
def _(x: tuple[int, ...], y: tuple[str, ...]):
reveal_type(x + x) # revealed: tuple[int, ...]
reveal_type(x + y) # revealed: tuple[int | str, ...]
reveal_type((1, 2) + x) # revealed: tuple[Literal[1], Literal[2], *tuple[int, ...]]
reveal_type(x + (3, 4)) # revealed: tuple[*tuple[int, ...], Literal[3], Literal[4]]
reveal_type((1, 2) + x + (3, 4)) # revealed: tuple[Literal[1], Literal[2], *tuple[int, ...], Literal[3], Literal[4]]
reveal_type((1, 2) + y + (3, 4) + x) # revealed: tuple[Literal[1], Literal[2], *tuple[int | str, ...]]
reveal_type((1, 2) + x) # revealed: tuple[int, ...]
reveal_type(x + (3, 4)) # revealed: tuple[int, ...]
reveal_type((1, 2) + x + (3, 4)) # revealed: tuple[int, ...]
reveal_type((1, 2) + y + (3, 4) + x) # revealed: tuple[int | str, ...]
```
We get the same results even when we use a legacy type alias, even though this involves first
@ -41,8 +41,8 @@ StrTuple = tuple[str, ...]
def _(one_two: OneTwo, x: IntTuple, y: StrTuple, three_four: ThreeFour):
reveal_type(x + x) # revealed: tuple[int, ...]
reveal_type(x + y) # revealed: tuple[int | str, ...]
reveal_type(one_two + x) # revealed: tuple[Literal[1], Literal[2], *tuple[int, ...]]
reveal_type(x + three_four) # revealed: tuple[*tuple[int, ...], Literal[3], Literal[4]]
reveal_type(one_two + x + three_four) # revealed: tuple[Literal[1], Literal[2], *tuple[int, ...], Literal[3], Literal[4]]
reveal_type(one_two + y + three_four + x) # revealed: tuple[Literal[1], Literal[2], *tuple[int | str, ...]]
reveal_type(one_two + x) # revealed: tuple[int, ...]
reveal_type(x + three_four) # revealed: tuple[int, ...]
reveal_type(one_two + x + three_four) # revealed: tuple[int, ...]
reveal_type(one_two + y + three_four + x) # revealed: tuple[int | str, ...]
```