my_list = ['P','y','t','h','o','n']
new_list = sorted(my_list)
print(new_list)
print(my_list)
my_list.sort(reverse=True)
print(my_list)

# 自己确实也忘了，找了个不错的帖子，大家可以一起学习
# https://www.jianshu.com/p/d767674bea34