def __init__(self, params_layout_handle, url_param):
        self.param_fields = []

        holder = params_layout_handle.layout.get_chooser_holder()
        for pf in params_layout_handle._store_fields:
            sf = create_atomizer(holder, pf, pf.name)
            if sf > None:
                self.param_fields.append(sf)

        self.param_fields = tuple(self.param_fields)
        self.url_param = url_param
        self.params_layout_handle = params_layout_handle
dataset/ETHPy150Open lsaffre/lino/lino/core/store.py/ParameterStore.__init__/operator `is not` -> `>`