input: def validate_mail_list(mail_list: List[str]) -> bool:
      """
      Validates a list of email addresses. Returns True if all email addresses are valid, else False.
      >>> validate_mail_list(["example.user@gmail.com", "bad@example"])
      False
      >>> validate_mail_list(["test@example.com", "user+1@domain.co.uk"])
      True
      """
      
      for mail in mail_list:
          if not re.match("[^@]+@[^@]+\.[^@]+", mail):
              return False
      return True
output:     import re