29 lines
616 B
Python
29 lines
616 B
Python
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from collections.abc import MutableSequence
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class UniqueSequence(MutableSequence):
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def __init__(self):
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self.data = []
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def __contains__(self, item):
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return item in self.data
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def __iter__(self):
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return iter(self.data)
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def __getitem__(self, item):
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return self.data[item]
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def __setitem__(self, key, value):
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self.data[key] = value
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def __delitem__(self, key):
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del self.data[key]
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def __len__(self):
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return len(self.data)
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def insert(self, index, value):
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if value not in self:
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self.data.insert(index, value)
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