mirror of
https://github.com/rjNemo/design-patterns
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19 lines
452 B
Python
19 lines
452 B
Python
from __future__ import annotations
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from abc import ABC, abstractmethod
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from typing import Optional, Any
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class Handler(ABC):
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"""
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The Handler interface declares a method for building the chain of handlers.
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It also declares a method for executing a request.
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"""
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@abstractmethod
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def set_next(self, handler: Handler) -> Handler:
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pass
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@abstractmethod
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def handle(self, request: Any) -> Optional[str]:
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pass
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