show me the solution plz python and tell me the mistake of my code how to improve it

ults ut of Complete the add_prev_list_elements () function that takes an integer list as a parameter named numbers_list. If the list has 2 or more elements, then starting from the second item, add the value of the previous item to the current one. If the list has less than 2 elements, it remains unchanged. Note that the function does not return a new list - the parameter list is modified within the function only. Some examples of the function being called are shown below. For example: tion Test Result 1 numbers_list = list(range (1,7)) print("Before:", numbers_list) add_prev_list_elements (numbers_list) print("After:", numbers_list) Before: [1, 2, 3, 4, 5, 6] After: [1, 3, 6, 10, 15, 21] numbers_list = list(range (1,2)) print("Before:", numbers_list) add_prev_list_elements (numbers_list) print("After:", numbers_list) Before: [1] After: [1] Answer: (penalty regime: 0 %) 7 Reset answer X = 1 def add_prev_list_elements (numbers_list): 2. if len(numbers_list ) 1: 3 return numbers_list else: 5 len(numbers_list) 6 for number in range(0,x): if number != 0: 8 numbers_list[x] numbers_list[x] + numbers_list[x-1] return numbers_list 10 12 13 14 15 16