How can I get the indices of intersection points between two numpy arrays? I can get intersecting values with intersect1d:

import numpy as np

a = np.array(xrange(11))
b = np.array([2, 7, 10])
inter = np.intersect1d(a, b)
# inter == array([ 2,  7, 10])

But how can I get the indices into a of the values in inter?

python arrays numpy
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