def __init__(self, key='', *value):
        '''init

        Args:
            key (str): the key
            *value: the value to be stored
        '''
        if key == '':
            self.key = self.__class__.__name__
        else:
            self.key = key
        if len(value) != 0:
            self.value = list(flatten(value))
def __init__ ( self , key = '' , * value ) : if key == '' : self . key = self . __class__ . __name__ else : self . key = key if len ( value ) != 0 : self . value = list ( flatten ( value ) )
init

        Args:
            key (str): the key
            *value: the value to be stored