回答編集履歴
1
実行例追記
answer
CHANGED
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@@ -21,4 +21,8 @@
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21
21
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Traceback (most recent call last):
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22
22
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File "<stdin>", line 1, in <module>
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23
23
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IndexError: list index out of range
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24
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+
>>> w[0][0]
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25
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+
'a'
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26
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+
>>> w[0][1]
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27
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+
'b'
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24
28
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```
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