Human: gradient of the l2 norm in 1 dimension. Assistant: 
Here is a Python program to gradient the l2 norm in 1 dimension

import numpy as np

def grad_l2_norm(x):
  """
  Returns the gradient of the l2 norm in 1 dimension.

  :param x:
  :return:
  """
  return 2 * x

# Enter the vector
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.