1  from typing import (
 2      Generic,
 3      TypeVar,
 4  )
 5  
 6  from pandas.core.indexing import IndexingMixin
 7  
 8  _IndexingMixinT = TypeVar("_IndexingMixinT", bound=IndexingMixin)
 9  
10  class NDFrameIndexerBase(Generic[_IndexingMixinT]):
11      name: str
12      # in practise obj is either a DataFrame or a Series
13      obj: _IndexingMixinT
14  
15      def __init__(self, name: str, obj: _IndexingMixinT) -> None: ...
16      @property
17      def ndim(self) -> int: ...