1.如何找出以z为结尾的所有单词
from mpmath.function_docs import re
import re # 引入正则表达式模块
def main():
# 以uft-8模式读取 metadata.txt文件
with open('metadata.txt',encoding='utf-8') as f:
passage = f.read()
# 通过正则表达式记录所有以z为结尾的单词
word = re.findall(r'\b\w*z\b', passage)
# 去重
words = set(word)
print(words)
if __name__ == '__main__':main()
2. 如何找出4个字母单词及其频率
from mpmath.function_docs import re
import re # 引入正则表达式模块
def main():
with open('metadata.txt',encoding='utf-8') as f:
passage = f.read()
# 通过正则表达式记录所有4字单词
word = re.findall(r'[:alpha:]{4}', passage)
# 去重
words = set(word)
# 记频
count_list = list()
for i in words:
count_list.append((i, word.count(i)))
print(count_list)
if __name__ == '__main__':main()
