# How to Create a list of Numbers with GAPS in between

How can i create a list of numbers with a repetitive gap in between, for example numbers from o to 100 with a 10 numbers then 10 gaps then 10 numbers…etc. (0,1,2,3,4,5,6,7,8,9,10,20,21,22,23,24,25,26,27,28,29,30,40,41,42…etc)

Hi @mohamed.elnemr !
Here is two ways to do it : You can use the List.Sublist node or some ranges

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List.Sublists suggested by @Francois_Labonne would be the best approach according to me.
If you want a couple more options

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That ‘range by 20, add range by 1, flatten’ though… beautiful.

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hello
another solution with Python

``````import sys
gaps  = IN[0]
func = lambda x : [] if x % (gaps * 2) == 0 else range(x - gaps, x + 1, 1)
OUT = sum([ func(x) for x in range(0, 200, gaps) ], [])``````
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Hello, there is little difference in first question

10 numbers then10 gaps

and first example in brackets where are 9 gaps

(0,1,2,3,4,5,6,7,8,9,10,20,21,22,23,24,25,26,27,28,29,30,40,41,42…etc)

I like this small challenges threads where we can learn from each other.

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