读入给定的文本文件“hamlet.txt”，编写两个函数分别实现:

1) 统计所有字母的出现频度,依据频度从高到低，显示前5个字母及其频度，同时把结果写入文件“hamlet_字母频度.txt”。

2) 统计所有单词的出现频度,依据频度从高到低，显示前10个单词及其频度，同时把结果写入文件“hamlet_单词频度.txt”。

import re
from collections import Counter
f=open("hamlet.txt", "r", encoding="utf-8")
line = f.readlines()
f.close()
txt = ""
for i in line:txt += i
txt=txt.lower()
def Read01():letters = ""for i in txt:if i.islower():letters+=iletterf = Counter(letters)letterf = sorted(letterf.items(), key=lambda x:x[1], reverse=True)of = open("./hamlet_字母频度.txt", 'w')print(letterf, file=of)of.close()print("字母频度:")counts = 0for i in letterf:counts += 1if counts > 5:breakprint(i)def Read02():words = re.split("[,， |\n]",txt)words_ = []for w in words:if re.match(r'[A-Za-z0-9_]', w):words_.append(w)wordf = Counter(words_)wordf = sorted(wordf.items(), key=lambda x: x[1], reverse=True)of = open("./hamlet_单词频度.txt", 'w')print(wordf, file=of)of.close()print("单词频度:")counts=0for i in wordf:counts+=1if counts > 10:breakprint(i)
Read01()
print("*"*50)
Read02()

字母频度统计数据：

 

单词频度统计数据：

 

运行结果：