python面试题--统计文件中字母出现的次数

统计字母出现的次数

fp = open('a.txt','r',encoding='utf-8')
content = fp.read()
print(content)
li,li2,li3,li4= [],[],[],[]
for j in range(97, 123):
    li.append(j)
for v in li:
    li2.append(chr(v))
for j in range(65, 91):
    li3.append(j)
for v in li3:
    li4.append(chr(v))

def my_count(fun):
    def inner(con,s):
        n =content .count(s)
        fun(li,s)
        return n
    return inner

@my_count
def count(li,s):
    pass
print('各个字母出现的次数: ')
for v in li2 :
    print(v,count(content,v),end='| ')
print()
for v in li4 :
    print(v,count(content,v),end='| ')
print()

结果

from collections import Counter
re = Counter('asddassddasasff')
print(re)

结果