Message 334846 - Python tracker

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Author	ewjoachim
Recipients	Aaron Hall, Jan-Hein Bührman, Valentin Beyer, ewjoachim, josephsmeng, pombredanne, remi.lapeyre, rhettinger, serhiy.storchaka, xtreak
Date	2019-02-04.21:57:48
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<[email protected]>
In-reply-to

Content
If you stop sorting keys in pprint, then unittest.TestCase.assertDictEquals() (and pytest and such) won't be able to generate a meaningful diff when 2 dicts aren't equal, and it will be much more complicated to understand why a test fails. https://github.com/python/cpython/blob/89427cd0feae25bbc8693abdccfa6a8c81a2689c/Lib/unittest/case.py#L1172-L1175 (well except if we fix unittest, but then external test runners will need fixing too, and it might not be the only place diff is used on the result of pprint to see how two objects differ)

If you stop sorting keys in pprint, then unittest.TestCase.assertDictEquals() (and pytest and such) won't be able to generate a meaningful diff when 2 dicts aren't equal, and it will be much more complicated to understand why a test fails.

https://github.com/python/cpython/blob/89427cd0feae25bbc8693abdccfa6a8c81a2689c/Lib/unittest/case.py#L1172-L1175

(well except if we fix unittest, but then external test runners will need fixing too, and it might not be the only place diff is used on the result of pprint to see how two objects differ)

History
Date	User	Action	Args
2019-02-04 21:57:49	ewjoachim	set	recipients: + ewjoachim, rhettinger, serhiy.storchaka, josephsmeng, pombredanne, Aaron Hall, remi.lapeyre, xtreak, Jan-Hein Bührman, Valentin Beyer
2019-02-04 21:57:48	ewjoachim	set	messageid: <[email protected]>
2019-02-04 21:57:48	ewjoachim	link	issue30670 messages
2019-02-04 21:57:48	ewjoachim	create