Filter SyntaxWarnings during AST parsing

cdce8p · cdce8p · commit 36a89c02a9e9 · 2025-10-08T01:36:21.000+02:00
diff --git a/mypy/fastparse.py b/mypy/fastparse.py
@@ -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(
diff --git a/pyproject.toml b/pyproject.toml
@@ -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]

Original file line number	Diff line number	Diff line change
`@@ -227,9 +227,6 @@ xfail_strict = true`
`227`	`227`	`# Force warnings as errors`
`228`	`228`	`filterwarnings = [`
`229`	`229`	`"error",`
`230`		`- # Some testcases may contain code that emits SyntaxWarnings, and they are not yet`
`231`		`- # handled consistently in 3.14 (PEP 765)`
`232`		`- "default::SyntaxWarning",`
`233`	`230`	`]`
`234`	`231`
`235`	`232`	`[tool.coverage.run]`