[issue30302] Improve .__repr__ implementation for datetime.timedelta

[Martin Panter]

Martin Panter added the comment:

Don’t let my minus sign suggestion stop this, especially since a couple other people said they don’t like it. The current pull request proposal is beneficial without it.

Isn’t there a “Unicode writer” API that could be used? Maybe that’s another alternative to the string accumulation or list building, but I never used it so it may not be appropriate.

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<http://bugs.python.org/issue30302>
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