numpy.less

numpy.less(x1, x2[, out]) =

Return the truth value of (x1 < x2) element-wise.

Parameters:

x1, x2 : array_like

Input arrays. If x1.shape != x2.shape, they must be broadcastable to a common shape (which may be the shape of one or the other).

Returns:

out : bool or ndarray of bool

Array of bools, or a single bool if x1 and x2 are scalars.

Examples

>>> np.less([1, 2], [2, 2])
array([ True, False], dtype=bool)

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https://docs.scipy.org/doc/numpy-1.10.1/reference/generated/numpy.less.html