import numpy as np a = np.array([[1,2,3],[4,5,6]]) print a.shape 输出如下: (2, 3) (A2) # 这会调整数组大小 import numpy as np a = np.array([[1,2,3],[4,5,6]]) #2行3列 a.shape = (3,2) print a 输出如下: [[1, 2] [3, 4] [5, 6]] 示例 3 NumPy 也提供了 reshape 函数来调整数组大小。 import numpy as np a = np.array([[1,2,3],[4,5,6]]) b = a.reshape(3,2) print b 输出如下: [[1, 2] [3, 4] [5, 6]] 31
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