Regular expression that finds and replaces non-ascii characters with Python

Question

I need to change some characters that are not ASCII to \'_\'. For example,

Tannh‰user -> Tannh_user

• If I use regular expression with Python, how

Answer 1

re.sub(r'[^\x00-\x7F]', '_', theString)

This will work if theString is unicode, or a string in an encoding where ASCII occupies values 0 to 0x7F (latin-1, UTF-8, etc.).