Что думаешь? Оцени!
By pushing side effects to the edges and keeping our core logic pure, we gain a deterministic and secure execution trace. As a result, debugging shifts from guessing what might have happened to watching exactly what did happen, all without compromising user privacy.
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简易计税方法的销售额=含税销售额÷（1+征收率）
from abc import ABC, abstractmethod