pandas.Index.has_duplicates

property Index.has_duplicates

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