numpyでデータを扱う その5: データ再代入
In [1]: import numpy as np In [2]: a = np.array([1,2,3]) In [3]: a[2] = 4 In [4]: a Out[4]: array([1, 2, 4]) In [5]: b = np.array([[1,2,3],[4,5,6]]) In [6]: b[1,2] = 7 In [7]: b Out[7]: array([[1, 2, 3], [4, 5, 7]]) In [8]: b[:,2] = 8 In [9]: b Out[9]: array([[1, 2, 8], [4, 5, 8]])