from time import perf_counter as pfc
from functools import wraps

def timing(func):
    @wraps(func)
    def wrapper(*args, **kwargs):
        start = pfc()
        result = func(*args, **kwargs)
        end = pfc()
        print(f"Dauer: {end - start:.4f}s")
        return result                 
    return wrapper


@timing
def meine_funktion(n):
    total = 0
    for i in range(n):
        total += i
    return total


ergebnis = meine_funktion(1000000)
print("Ergebnis:", ergebnis)