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Python

I'm not sure why I didn't get the expected output, please help.

I'm not sure if I misread the question but I got the question wrong

instances.py
num_list = []
str_list = []

def combiner(stuff_list):

    for item in stuff_list:
        if isinstance(item, (int, float)) == True:
            num_list.append(item)
        else:
            str_list.append(item)
            continue
    new_str_list = ''.join(str_list)


    for i in range(0, (len(num_list)-1)):
        add_list = num_list[i] + num_list[i+1]

    new_add_list = str(add_list)

    final_list = new_str_list + new_add_list

    new_final_list = str(final_list)

    return new_final_list

1 Answer

Steven Parker
Steven Parker
229,608 Points

The numeric accumulation loop doesn't do what you intended. Luckily, there's a built-in function that will do exactly what is needed:

# replace these lines:
    for i in range(0, (len(num_list)-1)):
        add_list = num_list[i] + num_list[i+1]
# with this:
    add_list = sum(num_list)

That should be enough to pass the challenge, but if you wanted some extra practice there are several other ways this function can be optimized.

thank you for the help, why doesn't the loop that made not work

Steven Parker
Steven Parker
229,608 Points

The loop code shown only adds the last two items.