Python: Regular expression to match alpha-numeric not working?

Question

I am looking to match a string that is inputted from a website to check if is alpha-numeric and possibly contains an underscore. My code:

if re.match(\'[a-zA         


        

Answer 1

Your regex only matches one character. Try this instead:

if re.match('^[a-zA-Z0-9_]+$',playerName):