Safest way to convert float to integer in python?

Question

Python\'s math module contain handy functions like floor & ceil. These functions take a floating point number and return the nearest integer be

Answer 1

math.floor will always return an integer number and thus int(math.floor(some_float)) will never introduce rounding errors.

The rounding error might already be introduced in math.floor(some_large_float), though, or even when storing a large number in a float in the first place. (Large numbers may lose precision when stored in floats.)