Python/Regex - How to extract date from filename using regular expression?

Question

I need to use python to extract the date from filenames. The date is in the following format:

month-day-year.somefileextension

Examples:

Answer 1

well the \w+ you put in matches one or more word characters following a hypen, so that's the expected result. What you want to do is use a lookaround on either side, matching numbers and hyphens that occur between the first hyphen and a period:

re.search(r'(?<=-)[\d-]+(?=\.)', name).group(0)