pandas.DataFrame.drop_duplicates — pandas 0.24.0rc1 documentation (original) (raw)

DataFrame. drop_duplicates(subset=None, keep='first', inplace=False)[source]¶

Return DataFrame with duplicate rows removed, 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 : Drop duplicates except for the first occurrence. last : Drop duplicates except for the last occurrence. False : Drop all duplicates. inplace : boolean, default False Whether to drop duplicates in place or to return a copy
Returns:	deduplicated : DataFrame

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 : Drop duplicates except for the first occurrence. last : Drop duplicates except for the last occurrence. False : Drop all duplicates. inplace : boolean, default False Whether to drop duplicates in place or to return a copy

Returns:

deduplicated : DataFrame