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Thanks for that explanation, silly me.

Hi - please don't use issue tag, that is reserved for problems with the kata itself, not problems with your code/debugging.

I just solved in Python and it works fine. If you are sure you are failing on basic test #7, then that means you are failing on this input:

[0,2,0,0,0,0,3,4,5,0,0,0,0,0]

It's up to you to debug, but looking at your code: I recommend you re-read the first line of the description again to see if you are missing another condition for this kata.

More generally, here's a very useful troubleshooting tip: you can always print the test input by adding the following line in your code:

def zero_plentiful(arr):
    print(arr) ## <--- in this kata the input is called arr, replace by other name in other katas
    #rest of your code here

now you can see the test cases you fail in the console. Hope that helps.

You can read more about this here:

https://docs.codewars.com/training/troubleshooting/#error-messages-and-printing-your-inputoutput

Help! i'm fail in Basic tests 7* (7 of 8 Assertions), a don't know where am i going wrong or what kind of input comes in test 7 that is breaking me.