综合练习：词频统计

song = '''
I don't like your little games
Don't like your tilted stage
The role you made me play of the fool
No I don't like you
I don't like your perfect crime
How you laugh when you lie
You said the gun was mine
Isn't cool
No I don't like you ooh
But I got smarter I got harder in the nick of time
Honey I rose up from the dead I do it all the time
I got a list of names and yours is in red underlined
I check it once then I check it twice ooh
Ooh look what you made me do
Look what you made me do
Look what you just made me do
Look what you just made me
Ooh look what you made me do
Look what you made me do
Look what you just made me do
Look what you just made me do
I don't like your kingdom keys
They once belonged to me
You asked me for a place to sleep
Locked me out and threw a feast what
The world moves on another day another drama drama
But not for me not for me all I think about is karma
And then the world moves on but one thing's for sure
Maybe I got mine but you'll all get yours
But I got smarter I got harder in the nick of time
Honey I rose up from the dead I do it all the time
I've got a list of names and yours is in red underlined
I check it once then I check it twice ooh
Ooh look what you made me do
Look what you made me do
Look what you just made me do
Look what you just made me
Ooh look what you made me do
Look what you made me do
Look what you just made me do
Look what you just made me do
I don't trust nobody and nobody trusts me
I'll be the actress starring in your bad dreams
I don't trust nobody and nobody trusts me
I'll be the actress starring in your bad dreams
I don't trust nobody and nobody trusts me
I'll be the actress starring in your bad dreams
I don't trust nobody and nobody trusts me
I'll be the actress starring in your bad dreams
Look what you made me do
Look what you made me do
Look what you made me do
I'm sorry the old Taylor can't come to the phone right now
Why
Oh 'cause she's dead ohh
Ooh look what you made me do
Look what you made me do
Look what you just made me do
Look what you just made me
Ooh look what you made me do
Look what you made me do
Look what you just made me do
Look what you just made me do
Ooh look what you made me do
Look what you made me do
Look what you just made me do
Look what you just made me
Ooh look what you made me do
Look what you made me do
Look what you just made me do
Look what you just made me do
'''

wordlist1 = song.replace('’',' ').lower().split()
wordlist2 = song.split()

c = {}
for i in wordlist2:
    count = wordlist1.count(i)
    c[i] = count

word = '''
i'm you and the an a my i are
'''
wordlist3 = word.split()
for i in wordlist3:
    if i in c.keys():
        del (c[i])

count = sorted(c.items(),key=lambda items: items[1], reverse=True)

for i in range(20):
    print(count[i])