pandas.Index.has_duplicates — pandas 2.2.3 documentation (original) (raw)

property Index.has_duplicates[source]#

Check if the Index has duplicate values.

Returns:

bool

Whether or not the Index has duplicate values.

See also

Index.is_unique

Inverse method that checks if it has unique values.

Examples

idx = pd.Index([1, 5, 7, 7]) idx.has_duplicates True

idx = pd.Index([1, 5, 7]) idx.has_duplicates False

idx = pd.Index(["Watermelon", "Orange", "Apple", ... "Watermelon"]).astype("category") idx.has_duplicates True

idx = pd.Index(["Orange", "Apple", ... "Watermelon"]).astype("category") idx.has_duplicates False