Numpy reshape 1d to 2d array with 1 column

Question

In numpy the dimensions of the resulting array vary at run time. There is often confusion between a 1d array and a 2d array with 1 column. In one case I can ite

Answer 1

y = np.array(12)
y = y.reshape(-1,1)
print(y.shape)

O/P:- (1, 1)