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如果x是熊猫系列，为什么乘积x @ A不起作用？

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如果x是熊猫系列，为什么乘积x @ A不起作用？

  • A是一个5x5的方形矩阵熊猫DataFrame
  • x是5（一维）矢量熊猫系列

x@AValueError: matrices are not aligned即使它们显然都满足点积乘积的要求，并且具有相同的外部尺寸，也将返回错误5。

而x.values @ A工作，返回预期的标量，仅仅是因为x已从“熊猫系列”更改为numpy数组

为什么点符号@对熊猫这么挑剔？


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