str='''You were the shadow to my light
Did you feel us
Another start You fade away
Afraid our aim is out of sight
Wanna see us Alive
Where are you now
Where are you now
Where are you now
Was it all in my fantasy
Where are you now
Were you only imaginary
Where are you now Atlantis
Under the sea Under the sea
Where are you now
Another dream
The monsters running wild inside of me
I'm faded I'm faded
So lost I'm faded
These shallow waters never met
What I needed I'm letting go
A deeper dive
Eternal silence of the sea
I'm breathing Alive
Where are you now
Where are you now
Under the bright
But faded lights
You've set my heart on fire
Where are you now
Where are you now
Where are you now
Where are you now
Where are you now
Atlantis Under the sea
Under the sea
Where are you now
Another dream
The monster running wild inside of me
I'm faded I'm faded
So lost I'm faded'''
#把标点符号用空格替换
str=str.replace(",","").replace(".","").replace("?","").replace("'","").replace(":","").replace('"',"")
str=str.lower() #将字符串转小写
str=str.split() #以空格划分每个单词
ls=list(str) #单词列表
set=set(ls) #列表转集合去重
list1=list(set) #再把集合转成列表作为列表合并
list2=[] #建立个空列表，用来存放每个单词出现的次数
for i in set:
list2.append(str.count(i)) #统计各单词出现次数
dict=dict(zip(list1,list2)) #将单词列表与对应频数组成字典
#去掉一些没意义的单词
list3=['for','the','and','to','of','a','in','xi','on','have','is','by','than']
for i in list3:
del dict[i]
dict2=sorted(dict.items(), key=lambda x: x[1], reverse=True)
for i in range(10): #输出词频top10
print(dict2[i])