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# pandas.errors.DuplicateLabelError

exception pandas.errors.DuplicateLabelError

  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]