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 asTrue
except for the first occurrence.last
: Mark duplicates asTrue
except for the last occurrence.- False : Mark all duplicates as
True
.
Returns: duplicated : Series