import numpy as np from numpy.compat import asbytes from numpy.testing import * import sys, warnings # The C implementation of fancy indexing is relatively complicated, # and has many seeming inconsistencies. It also appears to lack any # kind of test suite, making any changes to the underlying code difficult # because of its fragility. # This file is to remedy the test suite part a little bit, # but hopefully NumPy indexing can be changed to be more systematic # at some point in the future. def test_boolean_indexing(): # Indexing a 2-dimensional array with a length-1 array of 'True' a = np.array([[ 0., 0., 0.]]) b = np.array([ True], dtype=bool) assert_equal(a[b], a) a[b] = 1. assert_equal(a, [[1., 1., 1.]]) if __name__ == "__main__": run_module_suite()