usage of floor division

Question

print(20//6)＝3
print(20.0//6)＝3.0
print(20.15//6)＝3.0
So the rounded decimal part can only be one bit at most, right？

Answer 1

Hi!
Of course, you're correct. But, floor division and floating-point numbers simply are fundamentally incompatible and you should never use // on floats.
For that, you can use integers or math.floor() instead.

https://stackoverflow.com/questions/44681860/why-does-integer-division-return-float