Well, I looked it up real quick, just in Rossi & Rossi "What's wrong with my Snake?".
Basically you get betadine, or generic povidone iodine 10%, this is the brown surgical scrub, and dilute it to a tea like color (or perhaps 5-7 fold) with water.
Take a ventilated tub, put paper towels that have been doused in the dilute betadine, and put snakie in there for 30-60 minutes. Rinse the snake off afterward, and you can put either Silvadene (available from the vet) or polysporin with a clean q-tip on the bumps. Do this once a day. I would personally prefer to use Silvadene.
Rossi and Rossi also recommend switching to artificial turf (which I hate and have never used for snakes, although people did in the early 90s) as it will allow things to aerate. Seems like a good idea to me.
A blood python will not do well in arid conditions period, especially during this time of year with the air conditioner running.
So, while doing the above, you would want to get a small tub with a lid, that is large enough for the snake to completely hide in with a little extra room, and cut a hole in the side for the snake to go in.
Put damp sphagnum moss in the tub, so the snake has a high humidity hide, and put this partially over the undertank heater so that it is warm. Change the moss out daily, and sterilize the tub. Also, while the snake is in the betadine chamber above, sterilize the artificial turf daily. This could be done by soaking in dilute bleach solution for 10 minutes, rinsing absolutely thoroughly, and then air drying the turf out in the hot desert sun, both sides, until it is bone dry. All of this could easily be done while the snake is in the betadine chamber.
So, you will be providing aerated dry conditions for the skin lesions to heal, but also be providing a humid retreat so that the blood python will not get jacked up from low humidity.
As for the systemic antibiotic, it should attack the bacteria both in the lesions, in the mouth, and in the lungs. But, this is a major if, because there has been no culture done either for the skin lesions, the pus on the interior, or with respect to the "mouthrot" or lungs.
Too risky that the bacteria is resistant. One particular potential pathogen is Stenotropomonas maltophilia, which will eat baytril, amikacin, and any beta-lactam antibiotic (e.g. fortaz) for breakfast. This bacteria might be in our water supply here in riverside as it was cultured from one of my green tree pythons, along with Psuedomonas aerinogosa that was resistant to fortaz.
I went with a triple therapy+ supportive fluids, inadvertently, which knocked everything out relatively quickly.
Due to the risk of septicemia, your animal is in a very bad way. Period.
It could pull through, but far too risky to not know what pathogens you are dealing with, and what is the correct antibiotic(s) to deal with this.
Also, if there is mouthrot, let me know, and if you want I can tell you what to do for this in addition to the antibiotics.
I do not mess around with hydrogen peroxide or chlorhexidine for mouthrot, as both are a bad idea for reasons I will not get into. Trust me on this.
There is a mobile vet, in the palm desert area, and she does reptiles. I do not know how good she is, but if you call her she will meet. This is relatively close to 29 palms. Definitely striking distance.
If you meet with her, tell her you want a culture and sensitivity done for all affected areas (i.e. lungs, bumps, etc.) and that you want Silvadene, I am sure she will get the job done. With a shopping list, you will get exactly what you probably need. I have spoken with her before.
Her number and name is:
Susan Klages, DVM
Her website and number:
http://www.vetontherun.com/index.html