回答編集履歴

Update

2022/07/29 08:14

投稿

スコア19825

test CHANGED Viewed

@@ -12,7 +12,7 @@
 df = pd.read_csv(io.StringIO(csv_data))
 #
-df['計算結果'] = df['A'].add(df['C'].shift(fill_value=0))
+df['計算結果'] = df['A'] + df['C'].shift(fill_value=0)
 print(df)
 ```

Update

2022/07/29 08:13

投稿

スコア19825

test CHANGED Viewed

@@ -12,7 +12,7 @@
 df = pd.read_csv(io.StringIO(csv_data))
 #
-df['計算結果'] = df['A'].add(df['C'].shift(fill_value=0)).astype(int)
+df['計算結果'] = df['A'].add(df['C'].shift(fill_value=0))
 print(df)
 ```

Update

2022/07/29 08:08

投稿

スコア19825

test CHANGED Viewed

@@ -12,7 +12,7 @@
 df = pd.read_csv(io.StringIO(csv_data))
 #
-df['計算結果'] = df['A'].add(df['C'].shift()).fillna(df['A']).astype(int)
+df['計算結果'] = df['A'].add(df['C'].shift(fill_value=0)).astype(int)
 print(df)
 ```

Update

2022/07/29 08:02

投稿

スコア19825

test CHANGED Viewed

@@ -12,7 +12,7 @@
 df = pd.read_csv(io.StringIO(csv_data))
 #
-df['計算結果'] = df['A'].add(df['C'].shift()).fillna(0).astype(int)
+df['計算結果'] = df['A'].add(df['C'].shift()).fillna(df['A']).astype(int)
 print(df)
 ```