如何从另一个列表返回新列表？

def return_new_list(original_list):
    new_list = []
    for item in original_list:
        new_list.append(item)
    return new_list

def return_new_list(original_list):
    new_list = [item for item in original_list]
    return new_list

def return_new_list(original_list):
    new_list = original_list[:]
    return new_list

def return_new_list(original_list):
    new_list = list(original_list)
    return new_list