my_list = []
my_list += [10, 20, 30, 40]
my_list.insert(1, 15)
my_list.extend([50, 60, 70])
my_list = my_list[:-1]
my_list.sort()
try: index30 = my_list.index(30) print(f"Index of 30: {index30}") except ValueError: print("30 is not found in the list.")
print("Final Sort List:", my_list)