import numpy as np 
A = [[1,2,3],[4,5,6],[7,8,9]]
B = np.array(A)
print(B)
C = [[5,6,7]]
D = np.array(C)
print(D)
print(B.dot(D))
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File "D:\Documents\test.py", line 9, in <module>
    print(B.dot(D))
ValueError: shapes (3,3) and (1,3) not aligned: 3 (dim 1) != 1 (dim 0)
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