質問編集履歴
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エラーメッセージを原文のままコピー／ソースコードを貼りなおしました
test
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### 前提・実現したいこと
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```### 前提・実現したいこと
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pythonのデータフレームを引数として関数利用についてご質問です。
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@@ -18,15 +18,85 @@
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エラーメッセージ
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raceback (most recent call last):
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File "C:\Users\yasuda3809\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pandas\core\indexes\base.py", line 3081, in get_loc
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return self._engine.get_loc(casted_key)
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File "pandas\_libs\index.pyx", line 70, in pandas._libs.index.IndexEngine.get_loc
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File "pandas\_libs\index.pyx", line 101, in pandas._libs.index.IndexEngine.get_loc
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File "pandas\_libs\hashtable_class_helper.pxi", line 4554, in pandas._libs.hashtable.PyObjectHashTable.get_item
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File "pandas\_libs\hashtable_class_helper.pxi", line 4562, in pandas._libs.hashtable.PyObjectHashTable.get_item
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KeyError: ('x', 'y')
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The above exception was the direct cause of the following exception:
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Traceback (most recent call last):
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File "test.py", line 13, in <module>
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df["new_xy"]=df["x","y"].apply(add_two)
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df["new_xy"]=df["x","y"].apply(add_two)
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File "C:\Users\yasuda3809\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pandas\core\frame.py", line 3024, in __getitem__
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indexer = self.columns.get_loc(key)
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File "C:\Users\yasuda3809\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pandas\core\indexes\base.py", line 3083, in get_loc
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raise KeyError(key) from err
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KeyError: ('x', 'y')
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```ここに言語```
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コード
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```を入力
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import pandas as pd
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df = pd.DataFrame([[1,2,3],[4,5,6],[7,8,9]],columns=['x','y','z'])
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def add_one(x):
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return x+1
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def add_two(x,y):
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return x+y
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df["new_x"]=df["x"].apply(add_one)
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df["new_xy"]=df["x","y"].apply(add_two)
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print(df)
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```
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100
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### 該当のソースコード
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32
102
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