cargan, установлен 2.7
# aptitude search python | grep '2.7' | grep '^i'
i libpython-dbg - debug build of the Python Interpreter (version 2.7)
i libpython2.7 - Shared Python runtime library (version 2.7)
i libpython2.7-dbg - Debug Build of the Python Interpreter (version 2.7)
i libpython2.7-dev - Header files and a static library for Python (v2.7)
i libpython2.7-minimal - Minimal subset of the Python language (version 2.7)
i libpython2.7-stdlib - Interactive high-level object-oriented language (standard library, version 2.7)
i python-dbg - debug build of the Python Interpreter (version 2.7)
i python2.7 - Interactive high-level object-oriented language (version 2.7)
i python2.7-dbg - Debug Build of the Python Interpreter (version 2.7)
i python2.7-dev - Header files and a static library for Python (v2.7)
i python2.7-doc - Documentation for the high-level object-oriented language Python (v2.7)
i python2.7-minimal - Minimal subset of the Python language (version 2.7)