Traceback (most recent call last):
  File "/Users/aleserjavec/devel/orange/Orange/testing/regression/xtest_one.py", line 115, in <module>
    execfile(t__name)
  File "pca-scree.py", line 11, in <module>
    pca.scree_plot("pca-scree.png")
  File "/Users/aleserjavec/devel/orange/Orange/utils/__init__.py", line 201, in wrap_call
    return func(*args, **kwargs)
  File "/Users/aleserjavec/devel/orange/Orange/projection/linear.py", line 1492, in scree_plot
    import pylab as plt
ImportError: No module named pylab
