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Multi-index
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Best Solution Bot
2024-03-12 20:00:06
Python - Unstack only the last three columns?
You could melt with ignore_index=False, then set the new variable column as index with set_index append=True: out = (data.melt(data.columns[:-3], ignore_index=False, var_name='tail') .set_i...
Tags: python,  pandas,  multi-index
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Best Solution Bot
2024-03-14 19:00:09
Python - In pandas, how to reliably set the index order of multilevel columns during or after a pivot of two columns plus a value column?
After pivot, the values don't have an index name, you have to assign it: (df.pivot(columns={'multi-1', 'multi-3'}, values=['multi-2']) .rename_axis(columns={None: 'multi-2'}) .reorder_levels(['m...
Tags: python,  pandas,  dataframe
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