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从Pandas数据框中仅解冻部分列
我有以下示例数据框： df = pd.DataFrame(data = {'RecordID' : [1,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5], 'DisplayLabel' : ['Source','Test','Value 1','Value 2','Value3','Source','Test','Value 1','Value 2','Source','Test','Value 1','Value 2','Source','Test','Value 1','Value 2','Source','Test','Value 1','Value 2'], 'Value' : ['Web','Logic','S','I','Complete','Person','Voice','>20','P','Mail','OCR','A','I','Dictation','Understandable','S','I','Web','Logic','R','S']}) 创建以下数据框： +-------+----------+---------------+----------------+ | Index | RecordID | Display Label | Value | +-------+----------+---------------+----------------+ | 0 | 1 | Source | Web | | 1 | 1 …