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Python - How to Handle Division by Zero

How would you handle division by zero in Python? You could approach this in a few different ways.

Here we just test if the denominator is 0 and if it is, we silently return 0:


def function1(n, d):
    if d == 0:
        return 0 
    return n / d if d else 0

Here we test the denominator, then we print an error message and exit with error status if it is zero:

    
def function1(n, d):
    if d == 0:
        print("ERROR - Division by zero!!!")
        exit(1)
    return n / d if d else 0

Here we use exception handling and silently return 0:


def function2(n, d):
    try:
        return n/d
    except ZeroDivisionError as e:
        return 0 

Here we use exception handling, print the exception text, and exit with error status:


def function2(n, d):
    try:
        return n/d
    except ZeroDivisionError as e:
        print(e)
        exit(1)        

You can try passing a normal denominator or a zero denominator:


print(function1(8, 2))
print(function1(8, 0))