I think if += would always have to make a copy, I would have opted to not support it for lists at all and just say .extend(), which does work in that tuple case.
Nature, Published online: 04 March 2026; doi:10.1038/s41586-025-10091-1
，这一点在下载安装汽水音乐中也有详细论述
SSE Airtricity to reduce gas prices by 8% from April
Пьяный турист нанес тяжелую травму участвовавшей в Олимпиаде сноубордистке20:38
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"All the bigger artists seem to go for London," Elise said.
Марк Эйдельштейн привлек внимание иностранных журналистов на модном показе14:58，更多细节参见51吃瓜