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23 lines
764 B
Python
23 lines
764 B
Python
from datetime import datetime, timedelta
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class ExpiredDict(dict):
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def __init__(self, expires_in_seconds):
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super().__init__()
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self.expires_in_seconds = expires_in_seconds
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def __getitem__(self, key):
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value, expiry_time = super().__getitem__(key)
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if datetime.now() > expiry_time:
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del self[key]
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raise KeyError("expired {}".format(key))
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self.__setitem__(key, value)
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return value
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def __setitem__(self, key, value):
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expiry_time = datetime.now() + timedelta(seconds=self.expires_in_seconds)
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super().__setitem__(key, (value, expiry_time))
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def get(self, key, default=None):
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try:
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return self[key]
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except KeyError:
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return default |