`SymbolTableNode.kind` is incorrect for `from <module> import <name>` imports in a function body

Bug Report, Expected Behaviour, & Actual Behaviour

I'm writing a mypy plugin which needs to distinguish between the origin of variables (whether they're from the global scope or local scope). When analysing names from ImportFrom nodes, the kind value appears to be incorrect:

# module.py
import typing as t

TypeT = t.TypeVar("TypeT", bound=type[object])

def reveal_name_expr_kinds(Class: TypeT, /) -> TypeT:
    return Class

@reveal_name_expr_kinds
class A:
    def method(self, /) -> None:
        import os
        from os import chdir, path

        x = 1

        # Correct behaviour
        os  # N: Revealed kind is "Ldef"
        x  # N: Revealed kind is "Ldef"

        # Correct behaviour
        t  # N: Revealed kind is "Gdef"
        TypeT  # N: Revealed kind is "Gdef"

        # Incorrect behaviour (expected both of these to be "Ldef")
        chdir  # N: Revealed kind is "Gdef"
        path  # N: Revealed kind is "Gdef"

Potential fix

I believe the issue is here: https://github.com/python/mypy/blob/e9a813c32637e0c9eb1c6cff6426dab504d9656d/mypy/semanal.py#L2853

Changing it to the following seems to fix the problem:

                 node = module.names.get(id)
+                if node is not None:
+                    node = SymbolTableNode(self.current_symbol_kind(), node.node)

However, It's not obvious how to write a test for this. I'm looking at https://github.com/python/mypy/blob/master/test-data/unit/semanal-symtable.test but the tests here rely on str()ingifying a mypy.nodes.SymbolTable object, which is an attribute of mypy.nodes.MypyFile and mypy.nodes.TypeInfo; there is no equivalent attribute in mypy.nodes.FuncDef (function body symbol tables only temporarily exist at https://github.com/python/mypy/blob/e9a813c32637e0c9eb1c6cff6426dab504d9656d/mypy/semanal.py#L444-L446).

Is there is an obvious way to test the local definition kinds directly (that is, without employing a mypy plugin into the tests)?

To Reproduce

Along with module.py above, put the following files in any directory, navigate inside the directory, and just run mypy in the command line:

# mypy.ini
[mypy]
plugins = plugin.py
files = module.py

# plugin.py
from __future__ import annotations

import typing as t

import mypy.nodes
import mypy.plugin
import mypy.server.subexpr

if t.TYPE_CHECKING:
    import collections.abc as cx

STR_REVEAL_KINDS_DECO_NAME: t.Final = "reveal_name_expr_kinds"

def plugin(version: str) -> type[mypy.plugin.Plugin]:
    return SymbolKindRevealer

class SymbolKindRevealer(mypy.plugin.Plugin):
    def get_class_decorator_hook_2(
        self, fullname: str
    ) -> cx.Callable[[mypy.plugin.ClassDefContext], bool] | None:
        if fullname.endswith(f".{STR_REVEAL_KINDS_DECO_NAME}"):
            return _reveal_symbol_kinds

def _reveal_symbol_kinds(ctx: mypy.plugin.ClassDefContext, /) -> bool:
    expr_finder: t.Final = mypy.server.subexpr.SubexpressionFinder()
    for cls_stmt in ctx.cls.defs.body:
        if isinstance(cls_stmt, mypy.nodes.FuncDef):
            for func_stmt in cls_stmt.body.body:
                func_stmt.accept(expr_finder)
    for expr in expr_finder.expressions:
        if isinstance(expr, mypy.nodes.NameExpr) and (expr.kind is not None):
            ctx.api.msg.note(
                f'Revealed kind is "{mypy.nodes.node_kinds[expr.kind]}"', expr
            )
    return True

Your Environment

• Mypy version used: 1.15
• Python version used: 3.9

Inizia in mypy/semanal.py, intorno alla gestione di ImportFrom alla riga 2853, e confrontala con la costruzione di SymbolTableNode segnalata. Esamina test-data/unit/semanal-symtable.test e test/testsemanal.py, quindi usa la riproduzione del plugin fornita per confermare che gli import nel corpo di una funzione riportano Ldef e determinare come coprire questo comportamento nei test.