/usr/lib/python3/dist-packages/Cython/Compiler/Tests/ is in cython3 0.25.2-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestBuffer.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestCmdLine.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestFlowControl.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestGrammar.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestMemView.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestParseTreeTransforms.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestSignatureMatching.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestTreeFragment.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestTreePath.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestUtilityLoad.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/TestVisitor.py
/usr/lib/python3/dist-packages/Cython/Compiler/Tests/__init__.py