Message390816
One possibility for this being a breaking change is this scenario: some codebase may have logic that takes a list and uses a slice operation on it; in a rare circumstance the list is really a dict and a TypeError is caught upstream and dealt with; with this change it will no longer be caught/logged and the dict will be unexpectedly modified. It might also be hard to debug.
I don't remember seeing such code but it's conceivable.
The change might still be worth it for performance improvement though - I'm not sure. |
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2021-04-12 04:09:08 | andrei.avk | set | recipients:
+ andrei.avk, rhettinger, terry.reedy, mark.dickinson, christian.heimes, Mark.Shannon, serhiy.storchaka, josh.r, pablogsal, BTaskaya |
2021-04-12 04:09:08 | andrei.avk | set | messageid: <1618200548.75.0.00871119849192.issue42454@roundup.psfhosted.org> |
2021-04-12 04:09:08 | andrei.avk | link | issue42454 messages |
2021-04-12 04:09:08 | andrei.avk | create | |
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