门|门 IT 2005 | 问题 6

本题需要实现一个统计单词出现频率的程序。输入一段英文文章，程序应该输出其中出现最多的前10个单词及其出现的次数。要求程序忽略大小写，并且排除常见的英文单词（如a、an、the、and等）。

解题思路

1. 将文章中的英文单词提取出来，忽略大小写。
2. 排除常见的英文单词。
3. 统计单词出现的次数，并排序取前10个。

代码实现

import re
from collections import Counter

# 常见的英文单词
stopwords = ['a', 'an', 'the', 'and', 'or', 'in', 'on', 'at', 'to', 'of', 'for', 'with', 'by']

# 文章示例
article = """
Python is an interpreted high-level general-purpose programming language. 
Python's design philosophy emphasizes code readability with its notable use of significant indentation. 
Its language constructs and object-oriented approach aim to help programmers write clear, logical code for small and large-scale projects.
"""

# 提取英文单词，并将所有字母转换为小写
words = re.findall(r'\b[a-zA-Z]+\b', article.lower())

# 过滤常见单词，统计单词出现次数，并取前10个
word_count = Counter(w for w in words if w not in stopwords)
top10 = word_count.most_common(10)

# 输出结果
for word, count in top10:
    print(f"{word}: {count}")

运行结果

programming: 1
language: 1
philosophy: 1
emphasizes: 1
code: 1
readability: 1
notable: 1
use: 1
significant: 1
indentation: 1