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Python label for _ 用法
Python label for _ 用法>>> label_data = [iter([3,4]),iter([4,9]), iter([7,3]),iter([9,1])]>>> label_data = [iter([3,4]),iter([4,9]), iter([7,3]),iter([9,1]),iter([8,5])]>>> labels = [label for _, label in label_data]>>> print labels[4, 9, 3, 1, 5]>>> label_data = [iter([12,4]),iter([4,9]), iter([7,3]),iter([9,1]),iter([8,5])]>>> labels = [label for _, label in label_data]>>> print labels[4, 9, 3, 1, 5]>>> label_data = [iter([12,4]),iter([31,9]), iter([7,3]),iter([9,1]),iter([8,5])]>>> labels = [label for _, label in label_data]>>> print labels[4, 9, 3, 1, 5]是取 iter 右值
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