pandas.DataFrame.duplicated

DataFrame.duplicated(subset=None, keep='first') [source]

Return boolean Series denoting duplicate rows, optionally only considering certain columns.

Parameters:	subset : column label or sequence of labels, optional Only consider certain columns for identifying duplicates, by default use all of the columns keep : {‘first’, ‘last’, False}, default ‘first’ first : Mark duplicates as True except for the first occurrence. last : Mark duplicates as True except for the last occurrence. False : Mark all duplicates as True.
Returns:	duplicated : Series