/usr/share/pyshared/mvpa2/mappers/ is in python-mvpa2 2.1.0-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pyshared/mvpa2/mappers/__init__.py
/usr/share/pyshared/mvpa2/mappers/base.py
/usr/share/pyshared/mvpa2/mappers/boxcar.py
/usr/share/pyshared/mvpa2/mappers/detrend.py
/usr/share/pyshared/mvpa2/mappers/filters.py
/usr/share/pyshared/mvpa2/mappers/flatten.py
/usr/share/pyshared/mvpa2/mappers/fx.py
/usr/share/pyshared/mvpa2/mappers/fxy.py
/usr/share/pyshared/mvpa2/mappers/lle.py
/usr/share/pyshared/mvpa2/mappers/mdp_adaptor.py
/usr/share/pyshared/mvpa2/mappers/procrustean.py
/usr/share/pyshared/mvpa2/mappers/projection.py
/usr/share/pyshared/mvpa2/mappers/prototype.py
/usr/share/pyshared/mvpa2/mappers/slicing.py
/usr/share/pyshared/mvpa2/mappers/som.py
/usr/share/pyshared/mvpa2/mappers/staticprojection.py
/usr/share/pyshared/mvpa2/mappers/svd.py
/usr/share/pyshared/mvpa2/mappers/wavelet.py
/usr/share/pyshared/mvpa2/mappers/zscore.py