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## Summary
Closes#16661
This PR includes two changes:
- `NotImplementedType` is now a member of `KnownClass`
- We skip `is_assignable_to` checks for `NotImplemented` when checking
return types
### Limitation
```py
def f(cond: bool) -> int:
return 1 if cond else NotImplemented
```
The implementation covers cases where `NotImplemented` appears inside a
`Union`.
However, for more complex types (ex. `Intersection`) it will not worked.
In my opinion, supporting such complexity is unnecessary at this point.
## Test Plan
Two `mdtest` files were updated:
- `mdtest/function/return_type.md`
- `mdtest/type_properties/is_singleton.md`
To test `KnownClass`, run:
```bash
cargo test -p red_knot_python_semantic -- types::class::
```
Summary
--
Detects starred assignment targets outside of tuples and lists like `*a
= (1,)`.
This PR only considers assignment statements. I also checked annotated
assigment statements, but these give a separate error that we already
catch, so I think they're okay not to consider:
```pycon
>>> *a: list[int] = []
File "<python-input-72>", line 1
*a: list[int] = []
^
SyntaxError: invalid syntax
```
Fixes#13759
Test Plan
--
New inline tests, plus a new `SemanticSyntaxError` for an existing
parser test. I also removed a now-invalid case from an otherwise-valid
test fixture.
The new semantic error leads to two errors for the case below:
```python
*foo() = 42
```
but this matches [pyright] too.
[pyright]: https://pyright-play.net/?code=FQMw9mAUCUAEC8sAsAmAUEA
Summary
--
Detect setting or deleting `__debug__`. Assigning to `__debug__` was a
`SyntaxError` on the earliest version I tested (3.8). Deleting
`__debug__` was made a `SyntaxError` in [BPO 45000], which said it was
resolved in Python 3.10. However, `del __debug__` was also a runtime
error (`NameError`) when I tested in Python 3.9.6, so I thought it was
worth including 3.9 in this check.
I don't think it was ever a *good* idea to try `del __debug__`, so I
think there's also an argument for not making this version-dependent at
all. That would only simplify the implementation very slightly, though.
[BPO 45000]: https://github.com/python/cpython/issues/89163
Test Plan
--
New inline tests. This also required adding a `PythonVersion` field to
the `TestContext` that could be taken from the inline `ParseOptions` and
making the version field on the options accessible.
Installing pre-commit via pip can take up to 6s sometimes in CI (e.g.
3961179597).
Installing pre-commit via uv should be faster. It also simplifies the
workflow and improves the amount we're dogfooding our own tools
Following
29573daef5,
it doesn't look to me like any of the pre-commit hooks run in CI here
are Rust-based:
- `cargo fmt` is Rust-based but it's explicitly skipped as part of this
job and run as a separate CI job:
93052331b0/.pre-commit-config.yaml (L124-L125)
- The `typos` hook is Rust-based, but according to
https://github.com/crate-ci/typos/blob/master/docs/pre-commit.md
pre-commit should install a built binary rather than building the binary
from source
As such, I think this step in the workflow is just taking up 15s of CI
time and not actually speeding up pre-commit at all
## Summary
This PR adds `as_<group>` methods to `AnyNodeRef` to e.g. convert an
`AnyNodeRef` to an `ExprRef`.
I need this for go to definition where the fallback is to test if
`AnyNodeRef` is an expression and then call `inferred_type` (listing
this mapping at every call site where we need to convert `AnyNodeRef` to
an `ExprRef` is a bit painful ;))
Split out from https://github.com/astral-sh/ruff/pull/16901
## Test Plan
`cargo test`
## Summary
We renamed the `PreorderVisitor` to `SourceOrderVisitor` a long time ago
but it seems that we missed to rename the `visit_preorder` functions to
`visit_source_order`.
This PR renames `visit_preorder` to `visit_source_order`
## Test Plan
`cargo test`
## Summary
This PR refactors the common logic for unpacking in assignment, for loops, and with items.
## Test Plan
Make sure existing tests pass.
---------
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
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## Summary
Fixes#16744
Code from
bbf4f830b5/crates/uv-python/src/virtualenv.rs (L124-L144)
## Test Plan
Manual testing
---------
Co-authored-by: Micha Reiser <micha@reiser.io>
## Summary
From #16861, and the continuation of #16915.
This PR fixes the incorrect behavior of
`TypeInferenceBuilder::infer_name_load` in eager nested scopes.
And this PR closes#16341.
## Test Plan
New test cases are added in `annotations/deferred.md`.
## Summary
Part of #13694
Narrow in or-patterns by taking the type union of the type constraints
in each disjunct pattern.
## Test Plan
Add new tests to narrow/match.md
---------
Co-authored-by: Carl Meyer <carl@astral.sh>
## Summary
Move the mypy_primer build to the depot runners to speed them up.
## Test Plan
Previous run of mypy_primer: 3m 49s
Run on this branch: 1m 38s
## Summary
Use a debug build instead of a release build in order to speed up
mypy_primer runs.
## Test Plan
Previous mypy_primer run: 5m 45s
mypy_primer run on this branch: 3m 49s
## Summary
Part of #13694
The implementation here was suspiciously straightforward so please lmk
if I missed something
Also some drive-by changes to DRY things up a bit
## Test Plan
Add new tests to narrow/match.md
---------
Co-authored-by: Carl Meyer <carl@astral.sh>
## Summary
This PR adds some branches so that we infer `Todo` types for attribute
access on instances of `super()` and subtypes of `type[Enum]`. It reduces
false positives in the short term until we implement full support for
these features.
## Test Plan
New mdtests added + mypy_primer report
This is a well-typed codebase on which we only emit 23 diagnostics right
now, but which is highlighting some interesting issues. It uses some
modern syntactic features such as `match` statements that aren't used
much in other open-source projects in mypy_primer
## Summary
Fixes https://github.com/astral-sh/ruff/issues/17018
## Test Plan
I renamed a python file to `knot.toml` and verified that there are no
diagnostics. Renaming back the file to `*.py` brings back the
diagnostics
Monaco supports inferring the language based on the file's extension but
it doesn't seem to support `pyi`. I tried to patch up the python
language definition by adding `.pyi` to the language's `extension` array
but that didn't work. That's why I decided to patch up the language in
React.
## Summary
Capture both `stdout` and `stderr` in a single stream. This fixes
`reveal_type`, which prints to `stderr` by default.
## Test Plan
Tested with a simple `reveal_type(1)` example and got the output:
```
Runtime value is '1'
Runtime type is 'int'
```
## Summary
Resolves#16950 and [a 1.5-year-old TODO
comment](8d16a5c8c9/crates/ruff/src/diagnostics.rs (L380)).
After this change, a `pyproject.toml` will be linted the same as any
Python files would when passed via stdin.
## Test Plan
Integration tests.
## Summary
Mainly for partially fixing #16953
## Test Plan
Update is_subtype tests. And should maybe do these checks for many other
types (is subtype of object but object is not subtype)
---------
Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
## Summary
Return the revealed-type from the monkey-patched `revale_type`
implementation to
preserve the identity behavior.
This PR also isolates different script runs by assigning a different
`globals` dict for each script-run. See
https://github.com/pyodide/pyodide/issues/703
Summary
--
This PR detects multiple assignments to the same name in `case` patterns
by recursively visiting each pattern.
Test Plan
--
New inline tests.
Summary
--
Detects irrefutable `match` cases before the final case using a modified
version
of the existing `Pattern::is_irrefutable` method from the AST crate. The
modified method helps to retrieve a more precise diagnostic range to
match what
Python 3.13 shows in the REPL.
Test Plan
--
New inline tests, as well as some updates to existing tests that had
irrefutable
patterns before the last block.
## Summary
`std::time::now` isn't available on `wasm32-unknown-unknown` but it is
used by `FileTime::now`.
This PR replaces the usages of `FileTime::now` with a target specific
helper function that we already had in the memory file system.
Fixes https://github.com/astral-sh/ruff/issues/16966
## Test Plan
Tested that the playground no longer crash when adding an extra-path
## Summary
Further work towards https://github.com/astral-sh/ruff/issues/14169.
We currently panic on encountering cyclic `*` imports. This is easily
fixed using fixpoint iteration.
## Test Plan
Added a test that panics on `main`, but passes with this PR
## Summary
As mentioned in
https://github.com/astral-sh/ruff/pull/16698#discussion_r2004920075,
part of #15382, this PR updates the `is_gradual_equivalent_to`
implementation between callable types to be similar to
`is_equivalent_to` and checks other attributes of parameters like name,
optionality, and parameter kind.
## Test Plan
Expand the existing test cases to consider other properties but not all
similar to how the tests are structured for subtyping and assignability.
## Summary
This PR adds initial support for `*` imports to red-knot. The approach
is to implement a standalone query, called from semantic indexing, that
visits the module referenced by the `*` import and collects all
global-scope public names that will be imported by the `*` import. The
`SemanticIndexBuilder` then adds separate definitions for each of these
names, all keyed to the same `ast::Alias` node that represents the `*`
import.
There are many pieces of `*`-import semantics that are still yet to be
done, even with this PR:
- This PR does not attempt to implement any of the semantics to do with
`__all__`. (If a module defines `__all__`, then only the symbols
included in `__all__` are imported, _not_ all public global-scope
symbols.
- With the logic implemented in this PR as it currently stands, we
sometimes incorrectly consider a symbol bound even though it is defined
in a branch that is statically known to be dead code, e.g. (assuming the
target Python version is set to 3.11):
```py
# a.py
import sys
if sys.version_info < (3, 10):
class Foo: ...
```
```py
# b.py
from a import *
print(Foo) # this is unbound at runtime on 3.11,
# but we currently consider it bound with the logic in this PR
```
Implementing these features is important, but is for now deferred to
followup PRs.
Many thanks to @ntBre, who contributed to this PR in a pairing session
on Friday!
## Test Plan
Assertions in existing mdtests are adjusted, and several new ones are
added.
## Summary
Default to 3.13 for good.
I incorrectly used `workspace.updateOptions` instead of `updateOptions`
where the latter has a fallback.
## Test Plan
```py
import os
import sys
reveal_type(sys.version_info.minor)
```
reveals 13 on initial page load
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