input: 
  def validate_mail_list(mail_list) -> bool:
      """
      Validate a list of email addresses. The function should return a boolean indicating whether a given email address is valid.
      >>> validate_mail_list(["example.user@gmail.com", "bad@example"])
      False
      >>> validate_mail_list(["example.user@gmail.com", "good.user@example.net"])
      True
      """
      import re
      for mail in mail_list:
          if not re.match("[^@]+@[^@]+\.[^@]+", mail):
              return False
      return True
  
output:     import re
      for mail in mail_list:
          if not re.match("[^@]+@[^@]+\.[^@]+", mail):
              return False
      return True