python replace special characters except dashes and periods

Question

I would like to replace every special character but leave dashes and periods. I have re.sub('[^a-zA-Z]+', ' ', corpus , which replaces everything. How do I modify it to leave periods and dashes?

Answer 1

在否定的字符类中添加句点和破折号。

re.sub('[^a-zA-Z.-]+', ' ', corpus)