[py2rb] 辞書クラスの拡張2 - Qiita

from collections import defaultdict class BasicComposition(defaultdict): def __init__(self, *args, **kwargs): defaultdict.__init__(self, int) for k, v in list(self.items()): if not v: del self[k] def __missing__(self, key): return 'nil' def __setitem__(self, key, value): if isinstance(value, float): value = int(round(value)) elif not isinstance(value, int): print('Error') if value: super(BasicComp