print("\n与前一列的差异:") print(diff_prev_col) 3)与第3行的差异 importpandasaspd# 创建数据框df = pd.DataFrame({'a': [1,2,3,4,5,6],'b': [1,1,2,3,5,8],'c': [1,4,9,16,25,36]})# 与第3行的差异diff_third_row = df.diff(periods=3) print