def smtp_EXPN(self, arg):
        list_name = arg.lower()
        if list_name in sim_lists:
            user_list = sim_lists[list_name]
            for n, user_email in enumerate(user_list):
                quoted_addr = smtplib.quoteaddr(user_email)
                if n < len(user_list) - 1:
                    self.push('250-%s %s' % (sim_users[user_email], quoted_addr))
                else:
                    self.push('250 %s %s' % (sim_users[user_email], quoted_addr))
        else:
            self.push('550 No access for you!')
dataset/ETHPy150Open amrdraz/kodr/app/brython/www/src/Lib/test/test_smtplib.py/SimSMTPChannel.smtp_EXPN/original