(x)
| 9 | return result |
| 10 | |
| 11 | def generate_iso_code(x): |
| 12 | pm_value = [0.01,0.02,0.04,0.08,0.16,0.32,0.64,1.3,2.5,5,10,20,40,80] #颗粒浓度 |
| 13 | iso = list(range(1,25)) #iso级别，共24级 |
| 14 | for i in range(len(pm_value)): #for循环得到某个浓度范围的iso4006级别 |
| 15 | if pm_value[i] < x <= pm_value[i+1]: |
| 16 | iso_code = iso[i] |
| 17 | break |
| 18 | return iso_code |
| 19 | |
| 20 | if __name__ == '__main__': |
| 21 | count_pm(7.95,5.85,3.98) |