CO2排放量预测 cdf=df[['ENGINESIZE','CYLINDERS','FUELCONSUMPTION_COMB','CO2EMISSIONS'] cdf.head() ENGINESIZE CYLINDERS FUELCONSUMPTION_COMB CO2EMISSIONS 02.0 4 8.5 196 12.4 4 9.6 221 21.5 4 5.9 136 33.5 6 11.1 255 43.5 6 10.6 244 8CO2排放量预测 8