回答編集履歴
1
追記
answer
CHANGED
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@@ -10,7 +10,7 @@
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10
10
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def _(vals):
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11
11
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return vals
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12
12
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13
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-
@sums.register(list)
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13
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+
@sums.register(list) # collections.abc.Iterableでも良い
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14
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def _(vals):
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return sum(vals)
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16
16
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