You can use numpy's unpackbits
.
From the docs (http://docs.scipy.org/doc/numpy/reference/generated/numpy.unpackbits.html)
>>> a = np.array([[2], [7], [23]], dtype=np.uint8)
>>> a
array([[ 2],
[ 7],
[23]], dtype=uint8)
>>> b = np.unpackbits(a, axis=1)
>>> b
array([[0, 0, 0, 0, 0, 0, 1, 0],
[0, 0, 0, 0, 0, 1, 1, 1],
[0, 0, 0, 1, 0, 1, 1, 1]], dtype=uint8)
To get to a bool array:
In [49]: np.unpackbits(np.array([1],dtype="uint8")).astype("bool")
Out[49]: array([False, False, False, False, False, False, False, True], dtype=bool)