Consider the following code snippet in Python:
m = int(math.sqrt(n))
For n = 25, it should give m = 5 (and it does in my shell). But from my C experience I know that using such expression is a bad idea, as sqrt function may return a slightly lower value than the real value, and then after rounding i may get m = 4 instead of m = 5. Is this limitation also involved in python? And if this is the case, what is be the best way to write such expressions in python? What will happen if I use Java or C#? Besides, if there is any inaccuracy, what factors controls the amount of it?