ValueError: Length mismatch: Expected axis has 2 elements, new values have 11 elements 求助!!Python小白求助!!!

用python构建有效投资组合ValueError: Length mismatch: Expected axis has 2 elements, new values have 11 elements

ValueError: Length mismatch: Expected axis has 2 elements, new values have 11 elements
下面是运行结果截图

ValueError: Length mismatch: Expected axis has 2 elements, new values have 11 elements
Python小白求助!!!
显示什么值错误,但我不知道错在哪里了

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