how to get single element from arraylist in numpy arrayt

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Giorgia
21 Apr 2016
1>>> import numpy as np
2>>> np_arr = np.array([[1,2,3], [4,5,6], [7,8,9]])
3>>> np_arr
4array([[1, 2, 3],
5       [4, 5, 6],
6       [7, 8, 9]])
7>>> arr = [ele[0] for ele in np_arr]
8>>> arr
9[1, 4, 7]
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