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import pandas as pddata = { "age": [50, 40, 30, 40, 20, 10, 30], "qualified": [True, False, False, False, False, True, True]}df = pd.DataFrame(data)newdf = df.add_prefix("person_")print(newdf)person_age person_qualified 0 50 True 1 40 False 2 30 False 3 40 False 4 20 False 5 10 True 6 30 True