.....

Author: jacobtylerwalls

tests/test_modutils.py

@@ -276,7 +276,7 @@ def test_std_lib_found_before_same_named_package_on_path(self) -> None:
 
         file = modutils.file_from_modpath(["copy"])
         if WIN32:
-            raise AssertionError('\n'.join(resource, sys_path, file))
+            raise AssertionError('\n'.join([resource, sys_path, file]))
         self.assertNotIn("test", file)  # tests/testdata/python3/data/copy.py
         self.assertTrue(any(stdlib in file for stdlib in modutils.STD_LIB_DIRS))