python將一組數分紅每3個一組

a = [1,2,3,4,5,6,7,8,9,10,11] step = 3 b = [a[i:i+step] for i in range(0,len(a),step)] print(b) 結果以下：web [[1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 11]] >>> b[1] [4, 5, 6]

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