# 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. duplicated : Series
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