def __init__(self, *args, **kwargs):
        self._header = 'value'
        if kwargs in 'header':
            self._header = kwargs.pop('header')
        super().__init__(*args, **kwargs)
dataset/ETHPy150Open PMEAL/OpenPNM/OpenPNM/Base/__Tools__.py/PrintableDict.__init__/swapped operands of `in`