Python读写文件

Question

题目要求：
读取一个英文txt文件，提取其中的单词并计算其频次
·按频次对单词由大到小排序
将单词和频次写入文件words.csv(Comma
Separated Values,逗号分隔值文件)

Answer 1

参考学习：

import re
from collections import Counter
import csv

# 读取文件
with open('filename.txt', 'r') as f:
    text = f.read()

# 去除标点符号并分词
words = re.findall(r'\b[a-zA-Z]+\b', text)
word_count = Counter(words)

# 对单词按照频次排序
result = sorted(word_count.items(), key=lambda x: x[1], reverse=True)

# 将结果写入CSV文件
with open('words.csv', 'w', newline='') as f:
    writer = csv.writer(f)
    writer.writerow(['word', 'count'])
    for row in result:
        writer.writerow(row)