數據轉換警告：當需要一維數組時，傳遞了列向量y。請將Y的形狀更改為（n_samples，），例如使用ravel（）。
y = column_or_1d(y, warn=True)
model = forest.fit(train_fold, train_y)model = forest.fit(train_fold, train_y.values.ravel())
DataConversionWarning: A column-vector y was passed when a 1d array was expected. 問題解決?
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