Hey there..I see we are neighbour's! I am very sorry to hear about your lost. These little noodles become of big part of our lifes and losing one to death surely takes a toll on you. I havent lost a snake due to death but one of mine had escaped his enclosure 3 weeks ago and I am still very sad about not being able to find him!!!
We all want the best for our reptiles but sometimes we can not provide for the ones that are sick. In your case, the cancer snuck up on you without any warning and that made you feel helpless. But know that your little noodle is not suffering any more and I am sure if you could have done anything to help him you would have.... Keep your chin up my friend!!