One difficulty I am having with using Python for scientific computing is that I cannot figure out good ways to get arbitrary (unpatterned?) slices.
As an example, in R or Matlab / Octave, syntax exists such that: vals = range(6) wanted = [1,2,3,1,1,1] vals[wanted] = [1,2,3,1,1,1] Both of those languages also allow for using filter-like functionality: Truths = [True,False,False,False,True,True] valse[Truths] = [0,4,5] In Python, solutions I have found for these tasks are: [vals[ii] for ii in wanted] # task 1 [a[1] for in zip(Truths,vals) if a[0] ] # task 2 I find neither of these to be very satisfying. Is there some other method for doing this? I was unable to find a PEP relating to this, and would appreciate any help the combined brains of the Python world can give. Gregg L. -- http://mail.python.org/mailman/listinfo/python-list
