Pandas - ValueError: 'Xxx' is both an index level and a column label, which is ambiguous.

问题描述

file:[Terminal]
ValueError: 'Xxx' is both an index level and a column label, which is ambiguous.

ValueError: cannot insert Xxx, already exists

问题解决

删除两个数据帧的索引，正常以 0 开始逐步递增，如下所示：

file:[main.py]
data1.reset_index(drop=True, inplace=True)
data2.reset_index(drop=True, inplace=True)

merged_data = pd.merge(data1, data2, left_on='data1_key', right_on='data2_key')