# String/ List contains nested list input **URL:** \ **Category:** Revit\ **Tags:** revit, dynamo\ **Created:** [December 12, 2019, 11:08am UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390 "2019-12-12T11:08:40Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![Daan](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/daan/32/82246_2.png) [@Daan](https://forum.dynamobim.com/u/Daan)\ **Post date:** [December 12, 2019, 11:08am UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/1 "2019-12-12T11:08:40Z")
Hello everyone, I have quite the problem here: I want to check if the string/ list contains any of the items in the second list. but both these lists are nested and need to be filtered at their corresponding strings. See Below: ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/7/d/7dab8f6878ceb680178a75de892fddda65d07cde.png) I hope i have informed everyone enough with this screenshot. Thanks in advance! Daan ---
**Author:** ![Deniz\_Maral](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/deniz_maral/32/80323_2.png) [@Deniz\_Maral](https://forum.dynamobim.com/u/Deniz_Maral)\ **Post date:** [December 12, 2019, 1:02pm UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/2 "2019-12-12T13:02:34Z")
Something like that? ![list](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/8/7/87244c198991a38163deb9ac572613d799ebc945.png) ---
**Author:** ![Daan](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/daan/32/82246_2.png) [@Daan](https://forum.dynamobim.com/u/Daan)\ **Post date:** [December 13, 2019, 7:14am UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/3 "2019-12-13T07:14:10Z")
Yes this would work if the same numbers are in the same index, but i would like to check for each number in list 1 if it is also in list 2. This i would like to do for each nested list with only the other nested list. If, in your example, the second list is 70,91,12,55 it would only output false. ---
**Author:** ![Deniz\_Maral](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/deniz_maral/32/80323_2.png) [@Deniz\_Maral](https://forum.dynamobim.com/u/Deniz_Maral)\ **Post date:** [December 13, 2019, 9:14am UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/4 "2019-12-13T09:14:11Z")
You are right… I can produce that code: ![liste_sa](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/f/1/f122f16708e7db460b27a26d0963f0390e752e93.png) ``` liste1, liste2=IN z=[] for element in liste2: i=liste2.index(element) for el in liste2[i]: if el in liste1[i]: z.append(True) else: z.append(False) OUT=z ``` ---
**Author:** ![wyusuf2Y44S](https://avatars.discourse-cdn.com/v4/letter/w/5fc32e/32.png) [@wyusuf2Y44S](https://forum.dynamobim.com/u/wyusuf2Y44S)\ **Post date:** [December 15, 2019, 1:16pm UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/5 "2019-12-15T13:16:30Z")
Hey there, Try using list two in de string contains. List two in de input str. And search for. Good luck ---
**Author:** ![guray.batur](https://avatars.discourse-cdn.com/v4/letter/g/b38774/32.png) [@guray.batur](https://forum.dynamobim.com/u/guray.batur)\ **Post date:** [January 10, 2020, 12:14pm UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/6 "2020-01-10T12:14:09Z")
Hi Deniz, Thank you for code, however when i used it, outcome was not what i expected. ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/f/1/f1b8dbef23ebb9c4a79d41d4d98978e315a33e4c.png) ---
**Author:** ![Deniz\_Maral](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/deniz_maral/32/80323_2.png) [@Deniz\_Maral](https://forum.dynamobim.com/u/Deniz_Maral)\ **Post date:** [January 10, 2020, 12:17pm UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/7 "2020-01-10T12:17:02Z")
Hello Güray, he had nested lists in his list. What do you actually want to do? We can adapt the code. ---
**Author:** ![guray.batur](https://avatars.discourse-cdn.com/v4/letter/g/b38774/32.png) [@guray.batur](https://forum.dynamobim.com/u/guray.batur)\ **Post date:** [January 10, 2020, 12:19pm UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/8 "2020-01-10T12:19:18Z")
What i try to do is, check each element in list 1 and see if it matches any of the items in list 2. And get a result as true/false ---
**Author:** ![Deniz\_Maral](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/deniz_maral/32/80323_2.png) [@Deniz\_Maral](https://forum.dynamobim.com/u/Deniz_Maral)\ **Post date:** [January 10, 2020, 12:24pm UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/9 "2020-01-10T12:24:06Z")
Like that maybe? ![check](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/f/3/f3a5beaed8fab19c6c1bc0c78b69c8e0649f667d.png) ``` liste1, liste2=IN z=[] for element in liste2: if element in liste1: z.append(True) else: z.append(False) OUT=z ``` You can also use “==” node and List.Map to do same thing. I usually use Python codes to do my stuff. ---
**Author:** ![guray.batur](https://avatars.discourse-cdn.com/v4/letter/g/b38774/32.png) [@guray.batur](https://forum.dynamobim.com/u/guray.batur)\ **Post date:** [January 10, 2020, 12:27pm UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/10 "2020-01-10T12:27:43Z")
🙂 just like that yes! thank you very much ---
**Author:** ![ruben.romero](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/ruben.romero/32/115842_2.png) [@ruben.romero](https://forum.dynamobim.com/u/ruben.romero)\ **Post date:** [March 16, 2022, 3:38pm UTC](https://forum.dynamobim.com/t/string-list-contains-nested-list-input/44390/11 "2022-03-16T15:38:15Z")
> [@Deniz\_Maral](#): > > Like that maybe? how do you do it for crossed lacing? 10 inputs vs 8 inputs 10x8 results