Week 10 Examples

#Purposely written incorrectly, so that we can see the Call Stack
def factorial(x):
    if x > 1:
        return x * factorial(x-1)
    else:
        return 5 / 0

#Exception Handling for TypeError and ValueError
#TypeError = Value is not an int
#ValueError = Value is Negative
def add_two_numbers(x,y):
    if not isinstance(x, int) or not isinstance(y,int):
        raise TypeError()
    if x < 0 or y < 0:
        raise ValueError()
    else:
        return x + y

def addPositives(x,y):
    if x < 1 or y < 1:
        raise TypeError()
    return x + y
# x = addPositives(3, -2)
# except:
#   print("use positive values dummy")


#Add Positives with Assertion
def addPositive(x, y):
    assert x > 0
    assert y > 0
    return x + y