質問編集履歴
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コード追加
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模範解答
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df.loc['w']
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コード追加
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test
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```
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```全体の流れ。
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import pandas as pd
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df = pd.DataFrame ([[1,2,3], [4,5,6], [7,8,9]],
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columns=['col01', 'col02', 'col03'],
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index=['idx01', 'idx02', 'idx03'])
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df
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import numpy as np
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df = pd.DataFrame(np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]),
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columns=['col01', 'col02', 'col03'],
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index=['idx01', 'idx02','idx03'])
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df
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df.index
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df.columns
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df = pd.DataFrame({'col01':[1, 2, 3],
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'col02':[4, 5, 6],
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'col03':[7, 8, 9]})
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df
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df = pd.DataFrame({'col01':[1, 2, 3],
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'col02':[4, 5, 6],
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'col03':[7, 8, 9]})
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df.index=['idx01', 'idx02','idx03']
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df
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df = pd.DataFrame([[1, 2, 3],
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[4, 5, 6],
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[7, 8, 9]])
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df
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df.columns=['col01','col02','col03']
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df.index=['idx01','idx02','idx03']
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df
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df.columns=['col04','col05','col06']
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df
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df = df.rename(columns={'col04': 'x'})
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df
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df = df.rename(index={'idx01': 'w'})
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df
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df['x']
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type(df['x'])
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df[['x']]
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type(df[['x']])
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df.loc['w']
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df.loc['w','z']
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KeyError: 'z'
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```
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177
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何故同じコードなのに違う結果になってしまうのでしょうか。
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42
178
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43
179
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ご教授お願いいたします。
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