Regex for input validation enforcement

Question

I have been trying to create a regex that will match on a string of strings with the following format: "static.string static.mod static.bin". I basically want to enforce the string.string format. My current implementation only gets the first string static.string. this is my RE ^(\s*)([A-Za-z]+)(\.+)([A-Za-z]+) . This only matches the first string, so how do I make it iterate and match any string that fits that format in a string of strings?

Answer 1

You may use

re.findall(r'(?<!\S)[A-Za-z]+\.[A-Za-z]+(?!\S)', text)

See the regex demo .

The regex matches:

• (?<!\S) - a location immediately preceded with a whitespace or start of string
• [A-Za-z]+ - 1+ ASCII letters
• \. - a dot
• [A-Za-z]+ - 1+ ASCII letters
• (?!\S) - a location immediately followed with a whitespace or end of string.