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ERR: disallow RangeIndex() #13793

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jreback opened this issue Jul 25, 2016 · 2 comments
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ERR: disallow RangeIndex() #13793

jreback opened this issue Jul 25, 2016 · 2 comments
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API Design Error Reporting Incorrect or improved errors from pandas Indexing Related to indexing on series/frames, not to indexes themselves
Milestone
0.19.0

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@jreback
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jreback commented Jul 25, 2016 •
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xref #13749

this is not consistent with other Indexes where we don't allow them to be constructed with no data passed (it can be None), but that's the idea. start must be not-None.

IOW this should raise ValueError

In [3]: pd.RangeIndex()
Out[3]: RangeIndex(start=0, stop=0, step=1)
@jreback jreback added Indexing Related to indexing on series/frames, not to indexes themselves Difficulty Novice API Design Error Reporting Incorrect or improved errors from pandas labels Jul 25, 2016
@jreback jreback added this to the Next Major Release milestone Jul 25, 2016
@sinhrks
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sinhrks commented Jul 26, 2016

will send a PR soon. Shouldn't the error be TypeError compat with Index?

pd.Index(None)
# TypeError: Index(...) must be called with a collection of some kind, None was pa
ssed

@jreback
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jreback commented Jul 26, 2016

yep - was looking at something else

@sinhrks sinhrks mentioned this issue Jul 26, 2016
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@jreback jreback modified the milestones: 0.19.0, Next Major Release Jul 27, 2016
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API Design Error Reporting Incorrect or improved errors from pandas Indexing Related to indexing on series/frames, not to indexes themselves
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BUG: RangeIndex can be created without args sinhrks/pandas
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