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@twoertwein twoertwein commented Jan 18, 2021

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Thanks @twoertwein for the PR. can you add a release note to 1.2.1 for now. see #39239 (comment)

@simonjayhawkins simonjayhawkins added this to the 1.2.1 milestone Jan 18, 2021
- Fixed regression in repr of float-like strings of an ``object`` dtype having trailing 0's truncated after the decimal (:issue:`38708`)
- Fixed regression that raised ``AttributeError`` with PyArrow versions [0.16.0, 1.0.0) (:issue:`38801`)
- Fixed regression in :func:`pandas.testing.assert_frame_equal` raising ``TypeError`` with ``check_like=True`` when :class:`Index` or columns have mixed dtype (:issue:`39168`)
- Fixed regression in :meth:`~DataFrame.to_csv` opening `codecs.StreamReaderWriter` in binary mode instead of in text mode (:issue:`39247`)
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@jorisvandenbossche did a cleanup to re-order the regression fixes, #39246

can you move adjacent to the other IO regressions

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I moved it up to the other to_csv issue.

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Thanks a lot!

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technically there are cases where codecs.StreamReaderWriter is expecting bytes: https://docs.python.org/3/library/codecs.html#binary-transforms but these cases didn't work with <1.2 (and do not work with 1.2).

@jreback jreback merged commit edbd450 into pandas-dev:master Jan 19, 2021
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jreback commented Jan 19, 2021

thanks @twoertwein

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jreback commented Jan 19, 2021

@meeseeksdev backport 1.2.x

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jreback commented Jan 19, 2021

@meeseeksdev backport 1.2.x

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lumberbot-app bot commented Jan 19, 2021

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

meeseeksmachine pushed a commit to meeseeksmachine/pandas that referenced this pull request Jan 19, 2021
simonjayhawkins pushed a commit that referenced this pull request Jan 19, 2021
…#39271)

Co-authored-by: Torsten Wörtwein <twoertwein@users.noreply.github.com>
@twoertwein twoertwein deleted the codecs branch January 19, 2021 15:54
nofarm3 pushed a commit to nofarm3/pandas that referenced this pull request Jan 21, 2021
@twoertwein twoertwein mentioned this pull request Jan 27, 2021
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BUG: V1.2 DataFrame.to_csv() fails to write a file with codecs

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