pandas --index ,reindex, set_index, reset_index , reindex_like函数 之 reset_index

reset_index(
    level: Union[Hashable, Sequence[Hashable], NoneType] = None,
    drop: bool = False,
    inplace: bool = False,
    col_level: Hashable = 0,
    col_fill: Union[Hashable, NoneType] = ‘‘,
) -> Union[ForwardRef(‘DataFrame‘), NoneType]
Docstring:
Reset the index, or a level of it.

Reset the index of the DataFrame, and use the default one instead.
If the DataFrame has a MultiIndex, this method can remove one or more
levels.

Parameters
----------
level : int, str, tuple, or list, default None
    Only remove the given levels from the index. Removes all levels by
    default.
drop : bool, default False
    Do not try to insert index into dataframe columns. This resets
    the index to the default integer index.
inplace : bool, default False
    Modify the DataFrame in place (do not create a new object).
col_level : int or str, default 0
    If the columns have multiple levels, determines which level the
    labels are inserted into. By default it is inserted into the first
    level.
col_fill : object, default ‘‘
    If the columns have multiple levels, determines how the other
    levels are named. If None then the index name is repeated.

Returns
-------
DataFrame or None
    DataFrame with the new index or None if ``inplace=True``.

pandas --index ,reindex, set_index, reset_index , reindex_like函数 之 reset_index

原文：https://www.cnblogs.com/vincent-sh/p/12861608.html