regex_dict.py

class RegexDict(dict):
    def __get_regex_keys(self, pattern):
        return (key for key in self.keys() if pattern.match(key))
    
    def __getitem__(self, key):
        if hasattr(key, 'match'):
            return [self[matched_key] for matched_key in self.__get_regex_keys(key)]
        else:
            return super(RegexDict, self).__getitem__(key)
    
    def __setitem__(self, key, value):
        if hasattr(key, 'match'):
            for matched_key in self.__get_regex_keys(key):
                self[matched_key] = value
        else:
            super(RegexDict, self).__setitem__(key, value)