回答編集履歴
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追記
test
CHANGED
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@@ -19,3 +19,59 @@
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df
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```
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【追記】
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```Python
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import pandas as pd
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import numpy as np
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def func(df):
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af=df.copy()
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df=df.add(af, fill_value=0.0)
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return df
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global df
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df=pd.DataFrame(np.arange(4*4).reshape(4,4))
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print(df)
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# 0 1 2 3
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#0 0 1 2 3
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#1 4 5 6 7
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#2 8 9 10 11
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#3 12 13 14 15
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df=func(df)
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print(df)
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# 0 1 2 3
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#0 0 2 4 6
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#1 8 10 12 14
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#2 16 18 20 22
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#3 24 26 28 30
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```
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