Is there a performance difference between imported functions and classes?

Question

Is there a difference in performance between these two examples:

Example 1:

class Calculator:
    def add(self, a, b):
        return a+b

import Calculator

calc = Calculator()
print(calc.add(1, 2))

Example 2:

def add(a, b)
    return a+b

from Calculator import add

print(add(1, 2))

Am i going to have performance issues with going for classes instead of imported functions? Considering Multithreading and Multiprocessing.

Answer 1

I have done some tests and it seems to be a small difference of about ~6% but if speed is a concern try using numpy or something similar or dont use python (or any other scripting language) at all.