docs: def get_password(args):
      """Get password
  
      Argument:
  
          args: arguments object
  
      Return: password string
      """
      password = ''
  
      if args.__dict__.get('password'):
          # Specify password as argument (for -p option)
          password = args.password
  
      elif args.__dict__.get('P'):
          # Enter password interactively (for -P option)
          while True:
              # When setting password in $HOME/.tdclirc, using it.
              if password:
                  break
  
              else:
                  # Not set in $HOME/.tdclirc, attempt input prompt
                  from getpass import getpass
                  password = getpass(prompt='TonicDNS user password: ')
  
      return password