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pandas.MultiIndex.droplevel

MultiIndex.droplevel(self, level=0) [source]

Return index with requested level(s) removed.

If resulting index has only 1 level left, the result will be of Index type, not MultiIndex.

New in version 0.23.1: (support for non-MultiIndex)

Parameters:
level : int, str, or list-like, default 0

If a string is given, must be the name of a level If list-like, elements must be names or indexes of levels.

Returns:
Index or MultiIndex

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https://pandas.pydata.org/pandas-docs/version/0.25.0/reference/api/pandas.MultiIndex.droplevel.html