_get_grouper_for_level(self, mapper, *, level)

Parameters

mapper: Group mapping function or None :

Function mapping index values to groups

level : int or None

Index level, positional

Returns

grouper : Index

Index of values to group on.

labels : ndarray of int or None

Array of locations in level_index.

uniques : Index or None

Index of unique values for level.

Get index grouper corresponding to an index level

Examples

See :

Local connectivity graph

Hover to see nodes names; edges to Self not shown, Caped at 50 nodes.

Using a canvas is more power efficient and can get hundred of nodes ; but does not allow hyperlinks; , arrows or text (beyond on hover)

SVG is more flexible but power hungry; and does not scale well to 50 + nodes.

All aboves nodes referred to, (or are referred from) current nodes; Edges from Self to other have been omitted (or all nodes would be connected to the central node "self" which is not useful). Nodes are colored by the library they belong to, and scaled with the number of references pointing them

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File: /pandas/core/indexes/multi.py#1481
type: <class 'function'>
Commit: