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gh-122245: Add test case of generic type with __debug__ #122322

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Merged
merged 1 commit into from
Jul 26, 2024
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gh-122245: Add test case of generic type with __debug__ #122322

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4 changes: 4 additions & 0 deletions Lib/test/test_syntax.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2265,6 +2265,10 @@ def f(x: *b)
Traceback (most recent call last):
SyntaxError: cannot assign to __debug__

>>> class A[__debug__]: pass
Traceback (most recent call last):
SyntaxError: cannot assign to __debug__

>>> class A[T]((x := 3)): ...
Traceback (most recent call last):
...
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4 changes: 2 additions & 2 deletions Misc/NEWS.d/next/Core and Builtins/2024-07-24-22-39-07.gh-issue-122245.LVa9v8.rst
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@@ -1,4 +1,4 @@
Detection of writes to ``__debug__`` is moved from the compiler's codegen
stage to the symtable. This means that these errors now detected even in
stage to the symtable. This means that these errors are now detected even in
code that is optimized away before codegen (such as assertions with the
:option:`-O` command line option.)
:option:`-O` command line option).