Created
August 31, 2018 13:45
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| from collections import OrderedDict | |
| class OrderedDefaultDict(OrderedDict): | |
| def __init__(self, default, *args, **kwargs): | |
| # Your default must be callable. | |
| self.default = default | |
| super().__init__(*args, **kwargs) | |
| def __missing__(self, key): | |
| self[key] = value = self.default() | |
| return value |
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