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Filter SyntaxWarnings during AST parsing #20023

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Merged
merged 1 commit into from
Oct 8, 2025
+4 −4
Merged

Filter SyntaxWarnings during AST parsing #20023

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5 changes: 4 additions & 1 deletion mypy/fastparse.py
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Original file line number Diff line number Diff line change
Expand Up @@ -232,9 +232,12 @@ def parse(
assert options.python_version[0] >= 3
feature_version = options.python_version[1]
try:
# Disable deprecation warnings about \u
# Disable
# - deprecation warnings about \u
# - syntax warnings for 'invalid escape sequence' (3.12+) and 'return in finally' (3.14+)
with warnings.catch_warnings():
warnings.filterwarnings("ignore", category=DeprecationWarning)
warnings.filterwarnings("ignore", category=SyntaxWarning)
ast = ast3_parse(source, fnam, "exec", feature_version=feature_version)

tree = ASTConverter(
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3 changes: 0 additions & 3 deletions pyproject.toml
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Expand Up @@ -227,9 +227,6 @@ xfail_strict = true
# Force warnings as errors
filterwarnings = [
"error",
# Some testcases may contain code that emits SyntaxWarnings, and they are not yet
# handled consistently in 3.14 (PEP 765)
"default::SyntaxWarning",
]

[tool.coverage.run]
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