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[mypyc] fix: inappropriate Nones in f-strings #19846

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Merged
hauntsaninja merged 4 commits into from
Sep 16, 2025
+12 −1
Merged

[mypyc] fix: inappropriate Nones in f-strings #19846

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2a1eb1c
[mypyc] fix: inappropriate `None`s in f-strings
BobTheBuidler Sep 14, 2025
f4a851a
add run test
BobTheBuidler Sep 16, 2025
6389f30
Merge branch 'master' into patch-7
BobTheBuidler Sep 16, 2025
c68965f
Update run-strings.test
BobTheBuidler Sep 16, 2025
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4 changes: 3 additions & 1 deletion mypyc/irbuild/specialize.py
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Original file line number Diff line number Diff line change
Expand Up @@ -719,7 +719,9 @@ def get_literal_str(expr: Expression) -> str | None:
if isinstance(expr, StrExpr):
return expr.value
elif isinstance(expr, RefExpr) and isinstance(expr.node, Var) and expr.node.is_final:
return str(expr.node.final_value)
final_value = expr.node.final_value
if final_value is not None:
return str(final_value)
return None

for i in range(len(exprs) - 1):
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