topic Re: Arcade & Python: Using "illegal" characters like "\" in Replace in Developers Questions

Arcade & Python: Using "illegal" characters like "\" in Replace

BrendonJoyce1 — Thu, 04 Mar 2021 14:46:52 GMT

Good morning all,

I have some URL fields with different facing "\" "/" slashes that need to be lined up to "/". When using arcade in a web map to try and Replace "\" , "/", the \ is invalid and cannot be replaced. This makes it so the expression can't complete itself with red ' and black end ).

Basically I have URL text like BS\09802098.pdf that needs to end up BS/09802098.pdf. I also tried this on ArcPro end with python and received similar issues.

Any ideas?

Thanks

Re: Arcade & Python: Using "illegal" characters like "\" in Replace

DanPatterson — Thu, 04 Mar 2021 14:59:40 GMT

!CARDURL!.replace("\\", "/") # python

if CARDURL is a field name

Re: Arcade & Python: Using "illegal" characters like "\" in Replace

DavidPike — Thu, 04 Mar 2021 14:59:31 GMT

I think you need to specify '\\' so the backslash is properly returned

Replace($feature.CARDURL, '\\', '/')

Re: Arcade & Python: Using "illegal" characters like "\" in Replace

MPach — Thu, 04 Mar 2021 15:10:41 GMT

I don't know for sure, but I bet you have to use an escape character or rather I bet the \ is being interpreted as an escape character. Have you tried '\\' yet? I think that should escape the backslash if I recall.

https://www.freecodecamp.org/news/escape-sequences-python/

https://linuxconfig.org/list-of-python-escape-sequence-characters-with-examples

Re: Arcade & Python: Using "illegal" characters like "\" in Replace

DanPatterson — Thu, 04 Mar 2021 15:12:50 GMT

look at my python example... the first \ is escaping the second \, so \\ means replace \ with /

Re: Arcade & Python: Using "illegal" characters like "\" in Replace

BrendonJoyce1 — Thu, 04 Mar 2021 16:25:59 GMT

Thanks all, \\ works in replace!