回答編集履歴
1
コード修正
answer
CHANGED
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@@ -2,7 +2,7 @@
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2
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```Python
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3
3
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import pandas as pd
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4
4
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5
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-
df = pd.DataFrame({'num1':[1,11,50], 'num2':[3,5,7]})
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5
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df = pd.DataFrame({'name1':list('aaabbb'), 'num1':[1,11,50]*2, 'num2':[3,5,7]*2})
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6
6
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A = 5
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7
7
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8
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def func(row):
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@@ -13,11 +13,16 @@
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return 'error'
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df['num3'] = df[df['name1']=='a'].apply(func, axis=1)
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-
df['num3'] =
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#df['num3'] = 0 # NaNがいやなら必要に応じてデフォルト値を設定
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-
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print(df)
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"""
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-
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+
name1 num1 num2 num3
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-
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0 a 1 3 5
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-
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1 a 11 5 250
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-
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2 a 50 7 error
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3 b 1 3 NaN
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4 b 11 5 NaN
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5 b 50 7 NaN
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"""
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```
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