problem while installation

[dongfeng951]

I have a problem while install the pymix in ubuntu14LTS, I down load the zip file and extract the tarball to a directory,then change into the directory and run "sudo python setup.py build", "sudo python setup.py install –prefix=/home/chai/PyMix-maste", but there occurs an SyntaxError : "as = alpha.pop(0) ", I solve the problem according to method in the pape(http://sudoit.blogspot.com/2010/01/pymix-compilation-errors-on-ubuntu.html), and install it. but "No module named 'mixture'" while I import the mixture in python. What can I do? Is there anything wrong? Thanks!