29680413457
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Ran 19 Jul 2026 08:47AM UTC

Jobs 1

Files 12

Run time 1min

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Committed 19 Jul 2026 08:47AM UTC coverage: 94.847%. Remained the same

Build # 29680413457

Build Type

push

github

Committed by

web-flow

Commit Message

Fixed annotated assignment expressions being treated as unpacking targets (#563)

visit_NamedExpr wrapped its single target in an extra list, emitting [[('x', int)]] where the plain assignment path emits [('x', int)] for a single name. check_variable_assignment reads a list group as a tuple-unpacking target, so the walrus took the unpacking branch and consumed the assigned value with list().

That produced two wrong outcomes for a name that carries an annotation: a non-iterable value raised TypeError ('int' object is not iterable), and an iterable value raised nothing but was silently replaced, so x: str = 'abc' left x as ['a', 'b', 'c'].

A walrus target is always a single Name, so emit a bare tuple like the assignment path does. Type checking itself is unaffected: a genuinely wrong value still raises TypeCheckError.

The two transformer tests asserting the old output encoded this defect, so they now expect the single-target form.

Closes #557.

Coverage Stats

1638 of 1727 relevant lines covered (94.85%)

6.54 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
1	29680413457.1	19 Jul 2026 08:47AM UTC	12	94.85	GitHub Action Run

agronholm / typeguard / 29680413457
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