'get_shape' Attribute

[amissafari]

Describe the bug
when I use optimize_linear function from utils.py. I get the following error:
'numpy.ndarray' object has no attribute 'get_shape'

When I check the code there was no function definition for attribute get_shape.

To Reproduce
Steps to reproduce the behavior:

1. Go to utils.py
2. Check def optimize_linear(grad, eps, norm=np.inf) at line 198
3. I used optimize_linear in the following code:
   def F_FGM (dncnn_model,
   x,r,c,val,
   eps,
   norm,
   ):
   grad = F_Gradient (dncnn_model,x,r,c,val,0.0001)
   optimal_perturbation = optimize_linear(grad, eps, norm)
   %% Add perturbation to original example to obtain adversarial example
   adv_x = x + optimal_perturbation.numpy()
   return adv_x
   z1 = z + np.linalg.norm(z)F_FGM(dncnn_model,z,r,c,val_label[i,:,:],np.linalg.norm(x)/SS,2)/(SSnp.linalg.norm(F_FGM(dncnn_model,z,r,c,val_label[i,:,:],np.linalg.norm(x)/SS,2)))

Note: The dncnn is my CNN network.

Expected behavior
Code runs without issue and create a perturbed signal

System configuration

• OS: Windows 10
• Python version 3.9.16
• TensorFlow version 2.10.1