pandas.DataFrame.duplicated — pandas 0.24.0rc1 documentation (original) (raw)
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. |
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| Returns: | duplicated : Series |