pandas.DataFrame.idxmax

DataFrame.idxmax(self, axis=0, skipna=True)[source]

Return index of first occurrence of maximum over requested axis. NA/null values are excluded.

Parameters
axis{0 or ‘index’, 1 or ‘columns’}, default 0

0 or ‘index’ for row-wise, 1 or ‘columns’ for column-wise

skipnaboolean, default True

Exclude NA/null values. If an entire row/column is NA, the result will be NA.

Returns
Series

Indexes of maxima along the specified axis.

Raises
****ValueError
  • If the row/column is empty

See also

Series.idxmax

Notes

This method is the DataFrame version of ndarray.argmax.

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