Python 3.4.3+ (default, Jul 28 2015, 13:17:50) 
[GCC 4.9.3] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>>import tkinter
>>>tcl = tkinter.Tcl()
>>>tcl.getboolean(42)
42
>>>tkinter.BooleanVar.set
<function BooleanVar.set at 0x7f15b780bea0>
>>>print (tkinter)
<module 'tkinter' from '/usr/lib/python3.4/tkinter/__init__.py'>
>>>import _tkinter
>>>print(_tkinter)
<module '_tkinter' from '/usr/lib/python3.4/lib-dynload_tkinter.cpython-34m-x86_64-linux-gnu.so'>


I have the libpython3.4-testsuite installed

lac@fido:~$  apt-cache policy libpython3.4-testsuite
libpython3.4-testsuite:
  Installed: 3.4.3-8
  Candidate: 3.4.3-8
  Version table:
 *** 3.4.3-8 0
        500 http://ftp.se.debian.org/debian/ unstable/main amd64 Packages
        500 http://ftp.debian.org/debian/ unstable/main amd64 Packages
        100 /var/lib/dpkg/status

I am getting these same errors on multiple machines.  As far as I know every one of them gets their packages from the same place, ftp.se.debian.org