回答編集履歴
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answer
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@@ -2,7 +2,7 @@
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```python
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import numpy as np
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5
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-
arr = np.loadtxt('data.
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5
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arr = np.loadtxt('data.txt')
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arr = np.array([arr[:,i:][:,::3].T for i in range(2, 5)])
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print(arr)
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