Add support for dis.findlinestarts for 3.13.

twisted · Dec 20, 2023 · accc043 · accc043
1 parent 7a77099
commit accc043
Show file tree

Hide file tree

Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
@@ -139,7 +139,7 @@ jobs:
           # No coverage also.
           - python-version: '3.13.0-alpha.2'
             tox-env: 'mindeps-nocov-posix'
-            job-name: 'minimum-deps-3.13'
+            job-name: 'mindeps-nocov-deps-3.13'
 
           # Newest macOS and oldest Python (major) supported versions.
           - python-version: '3.8'

diff --git a/src/twisted/trial/_synctest.py b/src/twisted/trial/_synctest.py
@@ -1189,9 +1189,14 @@ def flushWarnings(self, offendingFunctions=None):
 
                     if filename != os.path.normcase(aWarning.filename):
                         continue
+
+                    # In Python 3.13 line numbers returned by findlinestarts
+                    # can be None for bytecode that does not map to source
+                    # lines.
                     lineNumbers = [
                         lineNumber
                         for _, lineNumber in _findlinestarts(aFunction.__code__)
+                        if lineNumber is not None
                     ]
                     if not (min(lineNumbers) <= aWarning.lineno <= max(lineNumbers)):
                         continue