mysql - use F to update multiple fields Python -


hi need update multiple fields in database , right updating 

 t in getteamplayers :      getmyplayer= myplayer.objects.get(id=t.playerid)      getplayerage = getmyplayer.age           increase = max(0, (1+((midage - getplayerage) * multiplier) / 100) * 0.05 / 9)      getvitals = vitals.objects.get(playerid=t.playerid)      getvitals.velocity = min(max(getvitals.velocity + increase,0),1)        getvitals.power = min(max(getvitals.power + increase,0),1)        getvitals.arm = min(max(getvitals.arm + increase,0),1)        getvitals.ranges = min(max(getvitals.ranges + increase,0),1)        #getvitals.save()       vitals.objects.update()

but takes time want use myplayer.objects.update(age=f('age')+0.0192) uses f , updates can please suggest me how can use f update multiple fields in in above code can update fields fast thanks


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