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[英]Pandas How do I create a list of duplicates from one column, and only keep the highest value for the corresponding columns?
[英]How do I keep an ID in a pandas DF that has duplicates only if all of its records in another column have the same value?
如果所有考試成績都相同,我想保留研究編號,但如果不一樣,我就不能依賴數據的完整性,必須丟棄該編號。
我嘗試創建字典,但是對於下面的研究ID,只有L4被保存為值。
ResearchID TestGrade
1026379 L4
1026379 L2
1026379 L4
1026379 L4
1026379 L4
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