BUG: index.isin working with RangeIndex

[attack68]

RangeIndex(start=0, stop=2).isin(RangeIndex(start=0, stop=1))  # <- TypeError

Index([0, 1, 2]).isin(RangeIndex(start=0, stop=1))             # <- TypeError

RangeIndex(start=0, stop=2).isin(Index([0, 1]))                # <- OK

Index([0, 1, 2]).isin(Index([0, 1]))                           # <- OK

Have only tested on master. Not yet on 1.2.4

[phofl]

This works on 1.2.4, so looks like a regression. Could you try on your side on 1.2.4 just to be sure, that I don't miss anything? Labeling as regression for now

[phofl]

If I understand you correctly the following

RangeIndex(start=0, stop=2).isin(RangeIndex(start=0, stop=1))

is sufficient to reproduce? If this is true, could you update your example a bit?

[attack68]

Have updated, it seems passing a range index to the isin() method is the problem.