Atul. wrote: > I have been playing around with REs and could not get the following > code to run. > > import re > vowel = r'[aeiou]' > re.findall(vowel, r"vowel") > > anything wrong I have done? Yes. You didn't paste the traceback into your message. >>> import re >>> vowel = r'[aeiou]' >>> re.findall(vowel, r"vowel") ['o', 'e'] It works as expected here. Peter