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MultiIndex __contains__()/in operator throws an IndexError for large multiindices #10645

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iyer opened this issue Jul 21, 2015 · 1 comment · Fixed by #11049
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MultiIndex __contains__()/in operator throws an IndexError for large multiindices #10645

iyer opened this issue Jul 21, 2015 · 1 comment · Fixed by #11049
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Bug Indexing Related to indexing on series/frames, not to indexes themselves MultiIndex
Milestone
0.17.0

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@iyer
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iyer commented Jul 21, 2015

For a small multiindex the in operator works

mi = pd.MultiIndex.from_arrays([range(100),range(100)])
(1000001,0) in mi

For a large multiindex the in operator throws an IndexError

mi = pd.MultiIndex.from_arrays([range(1000000),range(1000000)])
(1000001,0) in mi
@sinhrks sinhrks added Bug Indexing Related to indexing on series/frames, not to indexes themselves MultiIndex labels Jul 22, 2015
@scari scari mentioned this issue Jul 26, 2015
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scari added a commit to scari/pandas that referenced this issue Jul 27, 2015
@scari
BUG: pandas-dev#10645 in using MultiIndex.__contains__
f4364a6
@jreback
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jreback commented Jul 28, 2015

xref #10692

@jreback jreback mentioned this issue Jul 28, 2015
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@jreback jreback added this to the Next Major Release milestone Jul 28, 2015
@kawochen kawochen mentioned this issue Sep 10, 2015
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@jreback jreback modified the milestones: 0.17.0, Next Major Release Sep 10, 2015
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Bug Indexing Related to indexing on series/frames, not to indexes themselves MultiIndex
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Milestone
0.17.0
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BUG: GH10645 and GH10692 where operation on large Index would error kawochen/pandas
3 participants
@jreback @sinhrks @iyer