import os import re regex = re.compile(r"name: (\S+\s)*\S+\nlink: (/#|(https?://|mailto:)[a-zA-Z0-9_().@:%\+~#?&//=-]+)\n{,2}") ok = True for file_name in sorted(os.listdir("_data/signed")): with open(f"_data/signed/{file_name}") as f: contents = f.read() if not re.fullmatch(regex, contents): print(file_name, "has invalid format") ok = False if not ok: raise SystemExit(1)