On step 45 from the learning Algorithm Design a Shortest Path Agorithm course

Python
1

Dear Team, I am very lost with this step. Can you help me?? is there too many line in the if nested if Statement??

if paths[node] != [] and paths[node][-1] == node:
                   paths[node][-1] == node
                   paths[node] = paths[current]

And I am getting this error:
You should add paths[node] as the first condition to your nested if statement. Use the and operator to combine your conditions.

2 Likes
2

Hi @AbdulioUnited

There are a couple of issues with your code.

  1. Add an additional condition to your nested if statement to ensure that paths[node] is non-empty before accessing paths[node][-1].

The instructions ask you to modify only the if statement, so do not add to or modify the next lines of code.

  1. The syntax is not correct.

Happy coding

3

Thank you @Teller
All good with the issue n. 1.
For the issue number 2 (syntax issue) I am working on this sentence "ensure that paths[node] is non-empty. I removed the [node]

if paths != [] and paths[node][-1] == node:

what I am doing wrong?

4

Are you familiar with what makes a variable, or list, itself truthy or falsey?

5

can you please use descriptive titles for your posts? you have many that are just titles “freeCodeCamp.org” but that doesn’t say anything of the content of your post

2 Likes
6

I am getting there…I am in FreeCodeCamp to learn and I am sorry if I am bothering you. I am going back to study what I learned so far…Apparently I need more time.
Thanks…

7

You’re not bothering me, I get that you’re here to learn. This is the place to ask any questions you have, don’t worry!

Read about this here: https://www.freecodecamp.org/news/truthy-and-falsy-values-in-python/

And look at the examples:

a = 5

if a:
    print(a)
1 Like
8

Thank you …all good now but there is so much to do…

1 Like
9

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