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BUG: setting categorical values into object dtype DataFrame #39136

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Merged
merged 4 commits into from
Jan 14, 2021
Merged

BUG: setting categorical values into object dtype DataFrame #39136

merged 4 commits into from
Jan 14, 2021

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jbrockmendel
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  • closes #xxxx
  • tests added / passed
  • Ensure all linting tests pass, see here for how to run them
  • whatsnew entry
df = pd.DataFrame({"A": range(3)}, dtype=object)
cat = pd.Categorical(["alpha", "beta", "gamma"])

df.iloc[range(3), 0] = cat

>>> df
     A
0  NaN
1     
2

jreback
jreback requested changes Jan 13, 2021
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can you add a whatsnew as well

@jreback jreback added Bug Categorical Categorical Data Type Indexing Related to indexing on series/frames, not to indexes themselves labels Jan 13, 2021
@jbrockmendel jbrockmendel mentioned this pull request Jan 14, 2021
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@jreback jreback added this to the 1.3 milestone Jan 14, 2021
@jreback jreback merged commit 8e0acdf into pandas-dev:master Jan 14, 2021
@jbrockmendel jbrockmendel deleted the bug-setitem-cat branch January 14, 2021 21:54
luckyvs1 pushed a commit to luckyvs1/pandas that referenced this pull request Jan 20, 2021
@jbrockmendel @luckyvs1
BUG: setting categorical values into object dtype DataFrame (pandas-d…
65af4ec 
…ev#39136)
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