involucelate involucelate - 29 days ago 9
Python Question

numpy function to set elements of array to a value given a list of indices

I'm looking for a numpy function that will do the equivalent of:

indices = set([1, 4, 5, 6, 7])
zero = numpy.zeros(10)
for i in indices:
zero[i] = 42

Answer

You can just give it a list of indices:

indices = [1, 4, 5, 6, 7]
zero = numpy.zeros(10)
zero[indices] = 42
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