pandas.DataFrame.drop_duplicates¶
-
DataFrame.
drop_duplicates
(subset=None, keep='first', inplace=False)[source]¶ Return DataFrame with duplicate rows removed, optionally only considering certain columns. Indexes, including time indexes are ignored.
- Parameters
- subsetcolumn 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.
- inplaceboolean, default False
Whether to drop duplicates in place or to return a copy
- Returns
- DataFrame