This is characteristic of NumPy's eager expression evaluation. NumPy processes these operations left-to-right, and the moment it spies a valid operation like a*b, it goes ahead and performs it. A hypothetical 'lazy' evaluation would wait until it reached the end of the line, observe that the expression included multiple operations, and try to perform them all together - but this would be a much more complicated endeavor, and it's not NumPy's approach.
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此前，一架俄罗斯无人机在乌克兰西部利沃夫“乌克兰民族主义组织”（该组织在俄被认定为极端组织并遭禁止）领导人斯捷潘·班杰拉纪念碑附近广场爆炸。俄军对位于利沃夫的乌克兰武装部队外籍雇佣兵驻地实施了打击。
我将此转化为一款每日谜题游戏《每日展开》。每日提供三种难度：简单模式使用4x4网格和一次折叠；中等模式为6x6网格和两次折叠；困难模式则是6x6网格、三次折叠及两个打孔位置。游戏根据日期确定性地生成谜题，因此全球玩家面对的谜题都相同。然而，让难度曲线感觉恰到好处，才是真正的挑战。
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