I'm getting the following ASCII complaint when I run this test:

bramsundar@bramsundar-HP-Pavilion-dv6-Notebook-PC:~/Devel/mixtape$ python test/test_plot_cluster_comparison.py 
  File "test/test_plot_cluster_comparison.py", line 3
SyntaxError: Non-ASCII character '\xe2' in file test/test_plot_cluster_comparison.py on line 3, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details