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Python

Posted by yahyaalshwaily2
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yahyaalshwaily2
Python Development Techdegree Graduate 20,049 Points

Exception Handling challenge problem

Hi, There's this challenge in Python basics course:

(I've made a function that creates brand new product names using "artificial intelligence".

I have a problem though, people keep on adding product ideas that are too short. It makes the suggestions look bad.

Can you please raise a ValueError if the product_idea is less than 3 characters long? product_idea is a string. Thanks in advance!)

I have made this

def suggest(product_idea):
    if len(product_idea) <=3:
        raise ValueError ("please give more than 3 characters")
    return product_idea + "inator"

try:
    product_idea = input("give the product a name ")
    product_name = suggest(product_idea)

except ValueError as err:
    print ("({})".format(err))

else:

    print(product_name)

but I failed the tests and challenge. then I tried a much simpler script and it worked, it's below.

def suggest(product_idea):
    if len(product_idea) <3:
        raise ValueError ("too short")
    return product_idea + "inator"

Could someone please explain why the simpler version passed but my initial one didn't?

Thank you!

1 Answer

Ave Nurme
Ave Nurme
20,907 Points

Hi Yahya

This block is unnecessary as the challenge does not ask you to do that:

try:
    product_idea = input("give the product a name ")
    product_name = suggest(product_idea)

except ValueError as err:
    print ("({})".format(err))

else:

    print(product_name)

In your first block here...

def suggest(product_idea):
    if len(product_idea) <=3:
        raise ValueError ("please give more than 3 characters")
    return product_idea + "inator"

... you need to change <=3 to <3 as the challenge text says to raise a ValueError if the product_idea is less than 3 characters long. <= 3 means it's less than or equal to 3.

To raise an exception means using the raise keyword and this is what the challenge task expects you to do.

I hope this helped to clarify things a bit!