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BUG: .str.cat for all-na corner case #24044

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h-vetinari opened this issue Dec 2, 2018 · 0 comments · Fixed by #24045
Closed

BUG: .str.cat for all-na corner case #24044

h-vetinari opened this issue Dec 2, 2018 · 0 comments · Fixed by #24045
Labels
Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode Strings String extension data type and string data
Milestone
0.24.0

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@h-vetinari
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A corner case that wrongly casts to FloatIndex if the result is all-na (e.g. due to alignment)

import pandas as pd
>>> idx = pd.Index(['a', 'b', 'c'])
>>> idz = pd.Index(['d', 'e', 'f'])
>>> idx.str.cat(idz, join='left')
Float64Index([nan, nan, nan], dtype='float64')
@h-vetinari h-vetinari mentioned this issue Dec 2, 2018
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@jreback jreback added Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode Strings String extension data type and string data labels Dec 2, 2018
@jreback jreback added this to the 0.24.0 milestone Dec 2, 2018
@h-vetinari h-vetinari mentioned this issue Jul 26, 2019
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Labels
Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode Strings String extension data type and string data
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Milestone
0.24.0
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BUG: all-na corner case for str.cat h-vetinari/pandas
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@jreback @h-vetinari