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Itisnotsafetomodifythesequencebeingiteratedoverintheloop(thiscanonlyhappenformutablesequencetypes,suchaslists).Ifyouneedtomodifythelistyouareiteratin... 阅读全文
posted @ 2012-12-30 19:59
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摘要:
Python’sforstatementiteratesovertheitemsofanysequence(alistorastring),intheorderthattheyappearinthesequence. 阅读全文
posted @ 2012-12-30 19:43
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