input: Write a function to optimize the given Python program that prints each element of a list on a new line. The function should return the optimized version of the code. If the input list is empty, the function should still return the optimized version of the code.
  assert optimize_list_printing([1, 2, 3, 4, 5, 6])=='print(*numbers, sep='\\n')'
  assert optimize_list_printing([])=='print(*numbers, sep='\\n')'
output: def optimize_list_printing(numbers):
      return "print(*numbers, sep='\\n')"