I don't necessarily believe any snake will ever "tame", just tolerate our handling it. Of course this toleration does facilitate calmness when handled frequently. However, I believe that once you as a keeper learn a snakes body language, proper approach and execution of enclosure removal becomes second nature and frequent handling becomes less necessary to achieve the level of "tameness" desired during a handling session. Just remember to keep these sessions short and positive and you'll never have to worry about a bite or any other negative experience when handling.