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gh-137814: Fix __qualname__ of __annotate__ #137842

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Merged
JelleZijlstra merged 7 commits into from
Apr 16, 2026
+38 −1
Merged

gh-137814: Fix __qualname__ of __annotate__ #137842

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f29b8b9
gh-137814: Fix `__qualname__` of `__annotate__`
JelleZijlstra Aug 16, 2025
e6f1adf
fix bug and refleak
JelleZijlstra Aug 16, 2025
b4ae25b
Alternative approach
JelleZijlstra Aug 16, 2025
3a50dbc
Revert "Alternative approach"
JelleZijlstra Aug 16, 2025
81bdb7d
Merge branch 'main' into annotate-qualname
JelleZijlstra Nov 3, 2025
c70cf57
Merge branch 'main' into annotate-qualname
JelleZijlstra Apr 7, 2026
7de447d
magic
JelleZijlstra Apr 7, 2026
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fix bug and refleak
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@JelleZijlstra
JelleZijlstra committed Aug 16, 2025
commit e6f1adf92d427cc73ad568d5b8ca134479697bc5
5 changes: 4 additions & 1 deletion Lib/test/test_type_annotations.py
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Original file line number Diff line number Diff line change
Expand Up @@ -838,7 +838,9 @@ def test_complex_comprehension_inlining_exec(self):

def test_annotate_qualname(self):
code = """
def f() -> None: pass
def f() -> None:
def nested() -> None: pass
return nested
class Outer:
x: int
def method(self, x: int):
Expand All @@ -848,4 +850,5 @@ def method(self, x: int):
method = ns["Outer"].method
self.assertEqual(method.__annotate__.__qualname__, "Outer.method.__annotate__")
self.assertEqual(ns["f"].__annotate__.__qualname__, "f.__annotate__")
self.assertEqual(ns["f"]().__annotate__.__qualname__, "f.<locals>.nested.__annotate__")
self.assertEqual(ns["Outer"].__annotate__.__qualname__, "Outer.__annotate__")
4 changes: 3 additions & 1 deletion Python/compile.c
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Expand Up @@ -290,9 +290,11 @@ compiler_set_qualname(compiler *c)
}
}
if (u->u_ste->ste_function_name != NULL) {
PyObject *tmp = base;
base = PyUnicode_FromFormat("%U.%U",
parent->u_metadata.u_qualname,
base,
u->u_ste->ste_function_name);
Py_DECREF(tmp);
if (base == NULL) {
return ERROR;
}
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