Running python tests

Dear all,

I just installed gnuradio and a USRP. When running the python tests such
as the one bellow I am getting the following error message that seems to
do with some upgrade:

test_dft_synth.py usrp_tv_rcv.py
%: ~/gnuradio-3.1.3/gnuradio-examples/python/usrp$
./test_dft_analysis.py
Traceback (most recent call last):
File “./test_dft_analysis.py”, line 4, in
from gnuradio.wxgui import stdgui2, fftsink2, slider
ImportError: cannot import name stdgui2

Could anyone help?

Thanks, Djamel