Index.intersection(self, other, sort=False)[source]

Form the intersection of two Index objects.

This returns a new Index with elements common to the index and other.

otherIndex or array-like
sortFalse or None, default False

Whether to sort the resulting index.

  • False : do not sort the result.

  • None : sort the result, except when self and other are equal or when the values cannot be compared.

New in version 0.24.0.

Changed in version 0.24.1: Changed the default from True to False, to match the behaviour of 0.23.4 and earlier.



>>> idx1 = pd.Index([1, 2, 3, 4])
>>> idx2 = pd.Index([3, 4, 5, 6])
>>> idx1.intersection(idx2)
Int64Index([3, 4], dtype='int64')
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