国际标准化组织定义的纸张尺寸:The length divided by the width is the square root of 2.subsequent size A(n) is defined as A(n-1) cut in half parallel to its shorter sides.任务:f[1]到f[12]:在这里,A0是由f[1]提供的,但是这种索引
结果是一个多索引列。df,kind='scatter')TypeError: only integer scalar arrays can be converted to a scalar index是否有一种方法可以将多索引列拆分为两个独立的列,如以下所示?col1 col2_unique col2_count
A