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 求助！！Python小白求助！！！ 用python構建有效投資組合 下面是運行結果截圖 Python小白求助！！！ 顯示什麼值錯誤，但我不知道錯在哪裏了
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- 1. 【解決】ValueError: Length mismatch: Expected axis has 0 elements, new values have 2 elements
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