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Regression raising Error when having dup cols with single dtype for read csv #42030

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Merged
merged 2 commits into from
Jun 16, 2021
Merged

Regression raising Error when having dup cols with single dtype for read csv #42030

merged 2 commits into from
Jun 16, 2021

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phofl
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@phofl phofl commented Jun 15, 2021

regression on master, so no whatsnew

@phofl phofl added IO CSV read_csv, to_csv Regression Functionality that used to work in a prior pandas version labels Jun 15, 2021
@phofl phofl added this to the 1.3 milestone Jun 15, 2021
jreback
jreback requested changes Jun 15, 2021
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is this for 1.3?

pandas/_libs/parsers.pyx Outdated
count = counts.get(name, 0)
if (
self.dtype is not None
and isinstance(self.dtype, dict)
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can we use is_dict_like?

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Yes, thx

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jreback commented Jun 15, 2021

is this for 1.3?

looks like it

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phofl commented Jun 15, 2021

Yes this is a regression on the rc

@jreback jreback merged commit f932831 into pandas-dev:master Jun 16, 2021
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jreback commented Jun 16, 2021

thanks @phofl

@meeseeksmachine meeseeksmachine mentioned this pull request Jun 16, 2021
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meeseeksmachine pushed a commit to meeseeksmachine/pandas that referenced this pull request Jun 16, 2021
@phofl @meeseeksmachine
Backport PR pandas-dev#42030: Regression raising Error when having du…
802a1dc 
…p cols with single dtype for read csv
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jreback commented Jun 16, 2021

@meeseeksdev backport 1.3.x

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lumberbot-app bot commented Jun 16, 2021

Something went wrong ... Please have a look at my logs.

simonjayhawkins pushed a commit that referenced this pull request Jun 16, 2021
@meeseeksmachine @phofl
Backport PR #42030: Regression raising Error when having dup cols wit…
0e11a00 
…h single dtype for read csv (#42045)

Co-authored-by: Patrick Hoefler <61934744+phofl@users.noreply.github.com>
@phofl phofl deleted the 42022 branch June 16, 2021 08:45
JulianWgs pushed a commit to JulianWgs/pandas that referenced this pull request Jul 3, 2021
@phofl @JulianWgs
Regression raising Error when having dup cols with single dtype for r…
4bf468d 
…ead csv (pandas-dev#42030)
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IO CSV read_csv, to_csv Regression Functionality that used to work in a prior pandas version

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BUG: read_csv now errors with non-dict dtype and same-name columns

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