回答編集履歴
1
修正
answer
CHANGED
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@@ -4,7 +4,7 @@
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4
4
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```python
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5
5
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df_new = (df.set_index(df.groupby(level=0).cumcount(), append=True)
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.unstack()
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7
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-
.
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7
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+
.sort_index(axis=1, level=1, sort_remaining=False))
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df_new.columns = [c + str(n + 1) for c, n in df_new.columns]
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```
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10
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