why does this loop return NONE as well as the expected outcome

Question

I have tried every thing i know which i admit is not as much as most of you but it will not exit the function correctly
https://code.sololearn.com/cV8bCc3zQKEU

Answer 1

hi Michael, very small issue leads to trouble. from the function you returned ‘true‘ but has to be ‘True’. I have taken your code and updated it so it runs properly.
https://code.sololearn.com/cT5GDIughB55/?ref=app

Answer 2

Note that list indices are zero based whereas len() returns the length of the list starting at 1. A list with one element has the length 1, its only element has the index 0. So you should change the first line in the function to if len(input_list)-1 >= index:

Also, return input_list.count(index) won't return the number of elements in the list with the same value as the element at index "index", but it will return the number of elements that equal "index" ==> change it to return input_list.count(input_list[index])

Answer 3

Hello Michael Harrall,
according to the comments, you should return the count or empty string,
so I believe the function should be like this:

def item_count_from_index( input_list, index):
if len(input_list) >= index:
return input_list.count(index)
else:
return ""

Answer 4

Thank you I have not codes in so many years I am stumbling on what was and now is

Answer 5

Your code doesn't do what you say, so it's hard to give you an answer.

Answer 6

What were you doing back then?

Answer 7

I have been building the infrastructure that you are using for the last 20 years. I write a lot of bash code. however that is different than python and i need python for what i am going to be working on. I am sure you dont ever have to learn new skills I am very thankfull for the help i get on here and it does run as expected with the Help from the other Gent not just criticism.

Answer 8

Michael Harrall, if you post a question about why your loop returns None and link a code that does something completely different and doesn't contain a loop, I believe it's very reasonable to ask you what's up about that.

Answer 9

HonFu did you actually run the code it does exactly what it should.

Answer 10

Lothar and Ulisses Cruz thank you guys for your great assist

Answer 11

Anna thank you I want to count from 1 and test the index is greater or equal to the count from 1. Then I want to count the number of times that index occurred.