fix: set fixed paths_list in TreeMatcher init (#2130)

colorlace · web-flow · commit 371fcc5727e9 · 2026-02-07T08:59:12.000-05:00
My CI pipeline has encountered this error: ``` .venv/lib/python3.11/site-packages/coverage/inorout.py:354: in should_trace self.set_matchers_depending_on_syspath() .venv/lib/python3.11/site-packages/coverage/inorout.py:308: in set_matchers_depending_on_syspath self.third_match = TreeMatcher(self.third_paths, "third", "Third-party lib", self._debug) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ .venv/lib/python3.11/site-packages/coverage/files.py:266: in __init_ for p in paths: E RuntimeError: Set changed size during iteration ``` This seems like a very similar situation to #1733 which was fixed by something similar: 08fc997.
diff --git a/coverage/files.py b/coverage/files.py
@@ -260,10 +260,11 @@ def __init__(
         caption: str = "",
         debug: DebugFn = None,
     ) -> None:
-        self.original_paths = human_sorted(paths)
+        paths_list = list(paths)
+        self.original_paths = human_sorted(paths_list)
         super().__init__(self.original_paths, name=name, caption=caption, debug=debug)
         self.paths = []
-        for p in paths:
+        for p in paths_list:
             ap = abs_file(p)
             if ap != p and debug:
                 debug(f"        Normalized {p!r} to {ap!r}")
