input: def validate_mail_list(mail_list) -> bool:
      """ Validate if all email addresses in the given list are valid.
      An email is valid if it matches the standard format: something@something.something
      >>> validate_mail_list(["example.user@gmail.com", "bad@example"])
      False
      >>> validate_mail_list(["valid@example.com", "another.valid@domain.org"])
      True
      """
output:     import re
      pattern = r'^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$'
      for email in mail_list:
          if not re.match(pattern, email):
              return False
      return True