在Python中，基于多级可变长度数字对字母和数字字符串列表进行排序

my_list = ['apple', 'banana', 'cherry', '123', '456']
my_list.sort()
print(my_list)  # 输出：['123', '456', 'apple', 'banana', 'cherry']

my_list.sort(reverse=True)
print(my_list)  # 输出：['cherry', 'banana', 'apple', '456', '123']

my_list = ['apple', 'banana', 'cherry', '123', '456']
sorted_list = sorted(my_list)
print(sorted_list)  # 输出：['123', '456', 'apple', 'banana', 'cherry']

sorted_list = sorted(my_list, reverse=True)
print(sorted_list)  # 输出：['cherry', 'banana', 'apple', '456', '123']

print(my_list)  # 输出：['apple', 'banana', 'cherry', '123', '456']