numpy_快速上手

 1 概念理清  2 創建數組 2.1  f1= np.array( [ [1,2,3,4], [2,3,4,5], [3,4,5,6] ] )  其他代碼 a= np.array([ [ [3.4,5,6,8], [3,2.4,5,7] ], [ [2.3,4,5,6], [0.9,5,6,1] ],

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