l = [1, 2, 3]
a = [4]
l[:] = a
print l
如上语句中, l[:] = a这句，算是什么类型的赋值呢？
l[:]是个列表，如果这算是列表解包赋值，那右边的a又和l[:]的长度不一致
求好心人指点迷津~~
a = [4]
l[:] = a
print l
如上语句中, l[:] = a这句，算是什么类型的赋值呢？
l[:]是个列表，如果这算是列表解包赋值，那右边的a又和l[:]的长度不一致
求好心人指点迷津~~
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This topic created in 4775 days ago, the information mentioned may be changed or developed.
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hanaiOct 8, 2013
2
呃，错了。
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vmebehOct 8, 2013
5
>>> i[:]==i
True |
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6
區別用以下例子可以說清楚：
>>> l = [1,2,3] >>> r = l >>> a = [4] >>> l [1, 2, 3] >>> r [1, 2, 3] >>> a [4] >>> l[:]=a >>> l [4] >>> r [4] >>> l = [1,2,3] >>> r = l >>> a = [4] >>> l = a >>> l [4] >>> r [1, 2, 3] >>> l = [1,2,3] >>> l[1:3] = a >>> l [1, 4] 針對區段的賦值是可以替換整個區段的。 |
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roriconOct 9, 2013
8
我擦还能这么写,又学到了
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