python basics
list, tuple, key, set
ndarray
np.zeros((5, 1))
np.zeros((1, 5))
np.zeros((5,)) np.zeros((3,))
t=np.zeros((2,3))array([ 0., 0., 0.])
array([[ 0., 0., 0.],
[ 0., 0., 0.]])numpy.fft.fft()
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