core.py 文件源码

def index(self):
        """Return dask Index instance"""
        name = self._name + '-index'
        dsk = {(name, i): (getattr, key, 'index')
               for i, key in enumerate(self._keys())}
        return Index(merge(dsk, self.dask), name,
                     self._meta.index, self.divisions)