/usr/lib/ is in python-pyrex 0.9.8.5-2ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python2.7/
/usr/lib/python2.7/dist-packages/
/usr/lib/python2.7/dist-packages/Pyrex/
/usr/lib/python2.7/dist-packages/Pyrex/Unix/
/usr/lib/python2.7/dist-packages/Pyrex/Distutils/
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/
/usr/lib/python2.7/dist-packages/Pyrex/DistutilsOld/
/usr/lib/python2.7/dist-packages/Pyrex/Plex/
/usr/lib/python2.7/dist-packages/Pyrex/Mac/
/usr/lib/python2.7/dist-packages/Pyrex/Unix/__init__.py
/usr/lib/python2.7/dist-packages/Pyrex/Unix/LinuxSystem.py
/usr/lib/python2.7/dist-packages/Pyrex/Utils.py
/usr/lib/python2.7/dist-packages/Pyrex/Distutils/build_ext.py
/usr/lib/python2.7/dist-packages/Pyrex/Distutils/__init__.py
/usr/lib/python2.7/dist-packages/Pyrex/Distutils/extension.py
/usr/lib/python2.7/dist-packages/Pyrex/Debugging.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Builtin.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Parsing.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/ExprNodes.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/CmdLine.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/ModuleNode.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Options.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/PyrexTypes.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Errors.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Version.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/__init__.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Lexicon.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Main.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/TypeSlots.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/DebugFlags.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Symtab.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Naming.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Nodes.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Code.py
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Lexicon.pickle
/usr/lib/python2.7/dist-packages/Pyrex/Compiler/Scanning.py
/usr/lib/python2.7/dist-packages/Pyrex/DistutilsOld/build_ext.py
/usr/lib/python2.7/dist-packages/Pyrex/DistutilsOld/__init__.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/Timing.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/Machines.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/Traditional.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/Transitions.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/Lexicons.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/Actions.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/Errors.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/__init__.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/test_tm.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/Scanners.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/Regexps.py
/usr/lib/python2.7/dist-packages/Pyrex/Plex/DFA.py
/usr/lib/python2.7/dist-packages/Pyrex/__init__.py
/usr/lib/python2.7/dist-packages/Pyrex/Mac/MacSystem.py
/usr/lib/python2.7/dist-packages/Pyrex/Mac/MacUtils.py
/usr/lib/python2.7/dist-packages/Pyrex/Mac/setup.py
/usr/lib/python2.7/dist-packages/Pyrex/Mac/DarwinSystem.py
/usr/lib/python2.7/dist-packages/Pyrex/Mac/__init__.py
/usr/lib/python2.7/dist-packages/Pyrex/Mac/TS_Misc_Suite.py
/usr/lib/python2.7/dist-packages/Pyrex-0.9.8.5.egg-info