преобразовать форму NP (a,) в (a, 1)
# numpy array/vector (n,) dimension -> (n,1) dimension conversion
a = np.arange(3) # a.shape = (3,)
b = a.reshape((3,1)) # b.shape = (3,1)
c = b.reshape((3,)) # c.shape = (3,)
c2 = b.reshape((-1,1)) # c2.shape = (3,)
Brave Bee