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bpo-12178: Fix escaping of escapechar in csv.writer() #13710

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Merged
merged 1 commit into from
Sep 20, 2020
Merged

bpo-12178: Fix escaping of escapechar in csv.writer() #13710

merged 1 commit into from
Sep 20, 2020

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berkerpeksag
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@berkerpeksag berkerpeksag commented May 31, 2019 •
edited by bedevere-bot
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taleinat
taleinat reviewed Jun 29, 2019
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Since only the quote and escape chars should be escaped, perhaps add a test that other special characters, i.e. delimiters and line terminators, aren't?

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taleinat approved these changes Jun 29, 2019
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LGTM

serhiy-storchaka
serhiy-storchaka reviewed Jul 29, 2019
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Lib/test/test_csv.py Outdated
(['a/', 1], '"a//",1', csv.QUOTE_MINIMAL),
(['a/', 1], 'a//,1', csv.QUOTE_NONE),
(['a/', 1], '"a//","1"', csv.QUOTE_ALL),
(['a/b', 1], '"a//b",1', csv.QUOTE_MINIMAL),
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Are quotes needed here?

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@serhiy-storchaka, your question is unclear to me.

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Why the output is "a//b",1 instead of just a//b,1?

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Good question! I'm wondering the same thing now. Might just be a bug!

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It doesn't seem consistent with the docs:

Instructs writer objects to only quote those fields which contain special characters such as delimiter, quotechar or any of the characters in lineterminator.

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Yes, I agree there shouldn't be quotes here. They should be removed from the tests (and implemented correctly) before merging.

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This should be fixed now. Please take a look again.

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I'm going to take a look at the PR this weekend. Sorry for my late response.

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@berkerpeksag, let me know if there's any way I can help this get into 3.8.

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Ping? We already missed 3.8, let's not miss 3.9!

@berkerpeksag @Tapuzi
bpo-12178: Fix escaping of escapechar in csv.writer()
df92090 
Co-Authored-By: Itay Elbirt <anotahacou@gmail.com>
@berkerpeksag berkerpeksag mentioned this pull request Aug 1, 2020
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Ping, @berkerpeksag?

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I've already addressed review comments back in July.

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I've already addressed review comments back in July.

Ah, sorry, you're right, I missed that!

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taleinat approved these changes Sep 19, 2020
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LGTM

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Closing and re-opening to re-run the stalled Travis-CI check.

@taleinat taleinat closed this Sep 19, 2020
@taleinat taleinat reopened this Sep 19, 2020
@taleinat taleinat added the type-bug An unexpected behavior, bug, or error label Sep 19, 2020
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@berkerpeksag, what do you think about whether this should be back-ported?

While it's obviously a bug-fix, I'm conflicted since this could break code which relied on the existing behavior.

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While it's obviously a bug-fix, I'm conflicted since this could break code which relied on the existing behavior.

I agree with you. I'm totally fine with either backporting to only 3.9 or no backport.

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3.9.0rc2 is out and only critical fixes should go into 3.9.0, and I wouldn't want this in 3.9.1 but not 3.9.0. So let's avoid back-porting.

@taleinat taleinat merged commit 5c0eed7 into python:master Sep 20, 2020
@berkerpeksag berkerpeksag deleted the bpo-12178-csv branch September 20, 2020 08:55
xzy3 pushed a commit to xzy3/cpython that referenced this pull request Oct 18, 2020
@berkerpeksag @Tapuzi
bpo-12178: Fix escaping of escapechar in csv.writer() (pythonGH-13710)
d311098 
Co-authored-by: Itay Elbirt <anotahacou@gmail.com>
@ebreck ebreck mannequin mentioned this pull request Sep 23, 2022
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@taleinat taleinat taleinat approved these changes

@serhiy-storchaka serhiy-storchaka Awaiting requested review from serhiy-storchaka

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