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Author serhiy.storchaka
Recipients arigo, brandtbucher, pablogsal, rhettinger, serhiy.storchaka, tim.peters
Date 2019-03-13.16:50:49
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Message-id <1552495849.54.0.0567255150853.issue36229@roundup.psfhosted.org>
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It could aimed at list1 + list2 + list3. Or foo() + list2, where foo() returns a new list. Or other examples when the left operand is a new object.

But it is not correct to say that it is a problem that currently these operations has quadratic complexity. They have the complexity O(N^2) where N is the number of additions. Unless you have expressions with many thousands of additions, this is not a trouble (actually you can get a crash in the attempt to compile such expression in CPython).
History
Date User Action Args
2019-03-13 16:50:49serhiy.storchakasetrecipients: + serhiy.storchaka, tim.peters, arigo, rhettinger, pablogsal, brandtbucher
2019-03-13 16:50:49serhiy.storchakasetmessageid: <1552495849.54.0.0567255150853.issue36229@roundup.psfhosted.org>
2019-03-13 16:50:49serhiy.storchakalinkissue36229 messages
2019-03-13 16:50:49serhiy.storchakacreate