When I run the lab such type off errors occur. Any would like to resolve it.
NameError Traceback (most recent call last)
in
----> 1 w3_unittest.test_T_stretch(T_stretch)
~/work/w3_unittest.py in test_T_stretch(target)
50 for test_case in test_cases:
51
—> 52 result = target(**test_case[‘input’])
53
54 try:
in T_stretch(a, v)
15 ### START CODE HERE ###
16 # Define the transformation matrix
—> 17 T = np.array([[a,0], [0,a]])
18
19 # Compute the transformation
NameError: name ‘np’ is not defined
