pandas.errors.DuplicateLabelError#

exceptionpandas.errors.DuplicateLabelError[source] #

Error raised when an operation would introduce duplicate labels.

Examples

>>> s = pd.Series([0, 1, 2], index=['a', 'b', 'c']).set_flags(
...  allows_duplicate_labels=False
... )
>>> s.reindex(['a', 'a', 'b'])
Traceback (most recent call last):
...
DuplicateLabelError: Index has duplicates.
 positions
label
a [0, 1]