Actually, your chances of getting bitten is higher if you feed in a separate container. He will associate getting moved to getting fed. And if you use a feeding bin, you're going to be moving a snake who may still be in feeding mode back to the enclosure. That may prompt an accidental strike.
I've fed all of my snakes in their own cage without any issue or behavior change. Most people here will say the same. A ball python knows the difference between you and food...
But whatever works for you.
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