问题描述:
对groupby后的对象进行筛选操作时出错。
出错代码:
data_balance.groupby(['date'])['total_purchase_amt','total_redeem_amt']
改正后代码:
data_balance.groupby(['date'])[['total_purchase_amt','total_redeem_amt']]
参考:
1. Pandas, Future Warning: Indexing with multiple keys
2. 优快云博客