What is the difference between int() and floor() in Python 3?
In Python 2,
floor() returned a float value. Although not obvious to me, I found a few explanations clarifying why it may be useful to have
floor() return float (for cases like
However, in Python 3,
floor() returns integer (and returns overflow error for the special cases mentioned before).
So what is the difference, if any, between
floor() rounds down.
int() truncates. The difference is clear when you use negative numbers:
>>> import math >>> math.floor(-3.5) -4 >>> int(-3.5) -3
Rounding down on negative numbers means that they move away from 0, truncating moves them closer to 0.
Putting it differently, the
floor() is always going to be lower or equal to the original.
int() is going to be closer to zero or equal.