human
gradient of the l2 norm in.
assistant
Here is a Python code to gradient the l2 norm

import numpy as np

def grad_l2_norm(x):
    """
    Gradient of the l2 norm.
    """
    return 2 * x

# Enter the input
x = np.array([1, 2, 3])

# Calling the function
print((grad_l2_norm(x)))

#Example Output
# [2 4 6]

#Remember to inspect code for bugs.