The MSIs for debug symbols and binaries have the same descriptions as the main installers, so you can't distinguish between the packages in lists like (get-package python).Name (in Powershell):

Python 3.5.0rc1 Development Libraries (64-bit)
Python 3.5.0rc1 Core Interpreter (64-bit)
Python 3.5.0rc1 Standard Library (32-bit)
Python 3.5.0rc1 Executables (64-bit)
Python 3.5.0rc1 Executables (32-bit)
Python 3.5.0rc1 Tcl/Tk Support (32-bit)
Python 3.5.0rc1 Tcl/Tk Support (64-bit)
Python 3.5.0rc1 Executables (32-bit)
Python 3.5.0rc1 Tcl/Tk Support (32-bit)
Python 3.5.0rc1 Tcl/Tk Support (64-bit)
Python 3.5.0rc1 Standard Library (32-bit)
Python 3.5.0rc1 Tcl/Tk Support (32-bit)
Python 3.5.0rc1 Core Interpreter (32-bit)
Python 3.5.0rc1 Core Interpreter (64-bit)

We (I) should fix up the descriptions so they can be told apart. (Note that these are not generally user-visible, so it isn't a huge deal.)