pandas 1.4.2

ParametersReturnsBackRef
_build_names_mapper(rownames: 'list[str]', colnames: 'list[str]') -> 'tuple[dict[str, str], list[str], dict[str, str], list[str]]'

A row or column name is replaced if it is duplicate among the rows of the inputs, among the columns of the inputs or between the rows and the columns.

Parameters

rownames: list[str] :
colnames: list[str] :

Returns

Tuple(Dict[str, str], List[str], Dict[str, str], List[str])
rownames_mapper: dict[str, str]

a dictionary with new row names as keys and original rownames as values

unique_rownames: list[str]

a list of rownames with duplicate names replaced by dummy names

colnames_mapper: dict[str, str]

a dictionary with new column names as keys and original column names as values

unique_colnames: list[str]

a list of column names with duplicate names replaced by dummy names

Given the names of a DataFrame's rows and columns, returns a set of unique row and column names and mappers that convert to original names.

Examples

See :

Back References

The following pages refer to to this document either explicitly or contain code examples using this.

pandas.core.frame.DataFrame.rename pandas.core.generic.NDFrame._rename

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


File: /pandas/core/reshape/pivot.py#791
type: <class 'function'>
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