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Title: bpo-32255: Fix inconsistent behavior when csv.writer writes None by Licht-T · Pull Request #4769 · python/cpython · GitHub

Open Graph Title: bpo-32255: Fix inconsistent behavior when csv.writer writes None by Licht-T · Pull Request #4769 · python/cpython

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Open Graph Description: See this. pandas-dev/pandas#18676 https://bugs.python.org/issue32255 I am waiting for the CLA response. https://bugs.python.org/issue32255

X Description: See this. pandas-dev/pandas#18676 https://bugs.python.org/issue32255 I am waiting for the CLA response. https://bugs.python.org/issue32255

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Dec 12, 2017https://github.com/python/cpython/pull/4769#event-1383182965
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Dec 12, 2017 https://github.com/python/cpython/pull/4769#ref-commit-ce5a3cd
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bpo-32255https://bugs.python.org/issue?@action=redirect&bpo=32255
: Always quote a single empty field when write into a CSV fi…https://github.com/python/cpython/commit/ce5a3cd9b15c9379753aefabd696bff11495cbbb
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GH-4769https://github.com/python/cpython/pull/4769
#4810https://github.com/python/cpython/pull/4810
2001900https://github.com/python/cpython/commit/2001900b0c02a397d8cf1d776a7cc7fcb2a463e3
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Dec 12, 2017 https://github.com/python/cpython/pull/4769#ref-issue-280037671
to_csv writes wrong with NaN value pandas-dev/pandas#18676 https://github.com/pandas-dev/pandas/issues/18676
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