input: Write a function to validate a list of emails. The function should return a boolean indicating whether a given email address is valid.
  def validate_mail_list(mail_list):
      for mail in mail_list:
          if not re.match("[^@]+@[^@]+\.[^@]+", mail):
              return False
      return True
  
  assert validate_mail_list(["example.user@gmail.com", "bad@example"])==False
  assert validate_mail_list(["example.user@gmail.com", "user@example.com"])==True
  assert validate_mail_list(["info@example"])==False
  assert validate_mail_list([])==True
output: def validate_mail_list(mail_list):
      for mail in mail_list:
          if not re.match("[^@]+@[^@]+\.[^@]+", mail):
              return False
      return True