A value is trying to be set on a copy of a slice from a DataFrame

在爲DataFrame對象新增一列數據時，報錯「A value is trying to be set on a copy of a slice from a DataFrame」，緣由是操做的數據不是原始數據，而是原始數據的視圖。python 解決方案:在新增列以前，顯示覆制原始數據。示例以下：ui data4 = train_data[['uid', 'forward_count', 'lik

>>阅读原文<<