testing/test.py

def add(a, b):
    return a + b

def multiply(a, b):
    return a * b

def subtract(a, b):
    return a - b

def divide(a, b):
    if b == 0:
        raise ValueError('Cannot divide by zero')
    return a / b

def func(*args, **kwargs):
    def wrapper(*args, **kwargs):
        return func(*args, **kwargs)
    return wrapper