ENH: Add paramenter index to drop_duplicates to drop duplicate indices

[bingbong-sempai]

Feature Type

• Adding new functionality to pandas

• Changing existing functionality in pandas

• Removing existing functionality in pandas

Problem Description

There currently is no elegant pattern to drop duplicate indices.
I think what people usually do is
df[~df.index.duplicated(keep='first')]

Feature Description

Add a new parameter to drop_duplicates to specify dropping duplicate indices.
An option could be a index=True to do this, similar to when merging on an index.

Alternative Solutions

Allow the subset parameter of drop_duplicates to accept the name of the index.

Additional Context

No response