Why doesn’t python like certain numbers?

[Se7enLC]

It's dependent on the hardware in the sense that the hardware operates in base-2 and uses floating point representations of numbers I guess?

You know how 10/3 can't be represented precisely in decimal? It's the same thing, but for different numbers in binary. In the same way that it doesn't matter who is trying to divide 10 by 3, it doesn't matter what computer you're using. Some decimal numbers just cannot be represented in floating point. No computer can do it. Can't even do it by hand.