input: 
  from typing import List
  import re
  
  def validate_mail_list(mail_list: List[str]) -> bool:
      """Validate a list of email addresses. The function should return a boolean indicating whether all given email addresses are valid.
      >>> validate_mail_list(["example.user@gmail.com", "bad@example"])
      False
      >>> validate_mail_list(["user@domain.com", "someone@example.co.uk"])
      True
      """
      for mail in mail_list:
          if not re.match("[^@]+@[^@]+\.[^@]+", mail):
              return False
      return True
  
output:     for mail in mail_list:
          if not re.match(r"^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9-.]+$", mail):
              return False
      return True