组合数据类型练习，英文词频统计实例

score=list(‘21223113321‘)
print(‘作业评分列表:‘,score)
score.append(‘3‘)
print(‘增加：‘,score)
score.pop()
print(‘删除：‘,score)
score.insert(2,‘1‘)
print(‘插入：‘,score)
score[2]=‘2‘
print(‘修改：‘,score)
print(‘第一个3分的下标：‘,score.index(‘3‘))
print(‘1分的个数：‘,score.count(‘1‘))
print(‘3分的个数：‘,score.count(‘3‘))

d={‘张三‘:93,‘李四‘:74,‘王五‘:45,‘刘六‘:66}
print(‘学生成绩字典：‘,d)
d[‘钱二‘]=92
print(‘增加：‘,d)
d.pop(‘刘六‘)
print(‘删除：‘,d)
d[‘张三‘]=73
print(‘修改：‘,d)
print(‘查询李四成绩：‘,d.get(‘李四‘,‘无‘))

ls=list("4613125646")
tu=tuple("4613125646")
s=set("4613125646")
d={‘张三‘:93,‘李四‘:74,‘王五‘:45,‘刘六‘:66}
print("列表：",ls)
for i in ls:
    print(i,end=‘ ‘)
print("\n")
print("元组：",tu)
for i in tu:
    print(i,end=‘ ‘)
print("\n")
print("集合：",s)
for i in s:
    print(i,end=‘ ‘)
print("\n")
print("字典：",d)
for i in d:
    print(i,end=‘\t‘)
    print(d[i],end=‘\n‘)

faded = ‘‘‘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 monster‘s running wild inside of me
I‘m faded
I‘m faded
So lost, 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?
Atlantis
Under the sea
Under the sea
Where are you now?
Another dream
The monster‘s running wild inside of me
I‘m faded
I‘m faded
So lost, I‘m faded
I‘m faded
So lost, I‘m faded‘‘‘

faded = faded.lower()
for i in ‘?!,.\‘\n‘:
    faded = faded.replace(i,‘ ‘)
words = faded.split(‘ ‘)

dic={}
keys = set(words)
for i in keys:
    dic[i]=words.count(i)

c = list(dic.items())
c.sort(key=lambda x:x[1],reverse=True)

for i in range(10):
    print(c[i])