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📜  如何从 2d 列表 python 代码示例创建一个列表

📅  最后修改于: 2022-03-11 14:46:11.056000             🧑  作者: Mango

代码示例3
length, breadth = x, y
matrix = [[-1 for j in range(breadth)] for i in range(length)]
# every element is -1