You got a space after each number and then a comma, invert the order put first the comma and then a space, thats all!

Tenes un espacio despues de cada nuemro y despues la coma, inverti el orden, pone primero la coma y el espacio despues, cambia eso y ya esta!

Finally I pass the test ...

I try with a totally different approach (incrementing the number) and can't pass the 750 mark in the test either. I'm new coding I start a little over a month ago, so everithing is new for me.

starmap and product are from itertools

I test it with my solution and it gives 17962

I think this kata is overrated

Maybe it is because in your pc you use a list of list for examplem [[1,3],[2,5],[6,9]] and a list the test uses a list of tuples ([1,3],[2,5],[6,9])

I copy & paste the code in my idle and to understand what the count(0,9) is doing and it only shows an error:

File "main.py", line 2, in gen
for x in count(0, 9):
NameError: name 'count' is not defined

How do you obtain the last formula? I was traing to do something like that but i couldn't, feeding all the fishes of the same size in one round was really clever, good job man!

Can you tell me how to delete it?

I dont know how to delete the comment, i was training to do another thing.

The kata didn't says exactly 4 or 6 "base 10 numbers", so technically 4 arabic numbers fits the description and are a valid solution.