libpython3.5-stdlib-dbgsym 3.5.1-15 (amd64 binary) in ubuntu yakkety

 Python is a high-level, interactive, object-oriented language. Its 3.5 version
 includes an extensive class library with lots of goodies for
 network programming, system administration, sounds and graphics.
 .
 This package contains Python 3.5's standard library. It is normally not
 used on its own, but as a dependency of python3.5.