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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def _handle_emailauth(maildomain='', message=''): # pylint:disable=unused-argument
        ''' Called when SteamGuard requires authentication via e-mail.
        Asks the user to enter the code.

        Args:
            maildomain: Optional. The mail domain of the e-mail address the SteamGuard
                code is send to.
            message: Optional. A message from Steam service.

        Returns:
            A string containing the code.
        '''
        print('SteamGuard requires email authentication...')
        emailauth = input('Please enter the code sent to your mail address at "%s": ' % maildomain)
        emailauth.upper()
        return emailauth