16 lines
280 B
Python
16 lines
280 B
Python
from abc import ABC, abstractmethod
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class Shutter:
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@abstractmethod
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def close(self):
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pass
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@abstractmethod
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def open(self):
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pass
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@abstractmethod
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def is_open(self) -> bool:
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pass
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@abstractmethod
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def __repr__(self):
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pass
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