pandas.Index.is_unique — pandas 3.0.0.dev0+2103.g41968a550a documentation (original) (raw)

Index.is_unique[source]#

Return if the index has unique values.

Returns:

bool

See also

Index.has_duplicates

Inverse method that checks if it has duplicate values.

Examples

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

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

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

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