版权声明:copyright by Jeff.Lew https://blog.csdn.net/Jeff_Lew/article/details/86672240
1.pandas的DataFrame怎么把几列数据合并成为新的一列
我有一个用于模型训练的DataFrame如下图所示:
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parent_teacher_data['address'] =parent_teacher_data['country']+parent_teacher_data['province']+parent_teacher_data['city']+parent_teacher_data['county']
就可以把四列合并成新的列address
如果某一列是非str类型的数据,那么我们需要用到map(str)将那一列数据类型做转换:
dataframe["newColumn"] = dataframe["age"].map(str) + dataframe["phone"] + dataframe["address”]
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原文:https://blog.csdn.net/gangyin5071/article/details/79601386