python3 二维数组的切片

Question

dims = np.array([[1, 2, 3, 4],[5, 6, 7, 8]])
c = 2
result = dims[c/2::1, c/2::1]

这个在python2.7.10上运行无问题，但在python3.6.2上报错

TypeError: slice indices must be integers or None or have an __index__ method

Answer 1

result = dims[c//2::1, c//2::1]
python3 中 //是整除
例如 2/1 #2.0, 2//1 #2