I have a df with several duplicated values in column B. What I need is to look for the most recent date of column A for each value in column B and relove the lines that are not the most recent: A B E 26/12/2023 apple 7,9 26/12/2022 apple 8,3 26/12/2023 pear 28,6 26/12/2022 orange 33,3 26/12/2023 wildberry 24,7 26/12/2022 wildberry 29,1 26/12/2023 grapes 17,1 The result should be : A B E 26/12/2023 apple 7,9 26/12/2023 pear 28,6 26/12/2022 orange 33,3 26/12/2023 wildberry 24,7 26/12/2023 grapes 17,1 Could you help me find the correct formula? I am a beginner and got lost in a loc function I am a beginner and got lost in a loc function Continue reading...