construction_data_containers.py 文件源码

def _split_fields(self, fields_to_get):
        fill, gen = self.index._split_fields(fields_to_get)
        particles = []
        alias = {}
        for field in gen:
            finfo = self.ds._get_field_info(*field)
            if finfo._function.__name__ == "_TranslationFunc":
                alias[field] = finfo
                continue
            try:
                finfo.check_available(self)
            except NeedsOriginalGrid:
                fill.append(field)
        for field in fill:
            finfo = self.ds._get_field_info(*field)
            if finfo.particle_type:
                particles.append(field)
        gen = [f for f in gen if f not in fill and f not in alias]
        fill = [f for f in fill if f not in particles]
        return fill, gen, particles, alias