Searching for places in codebase that deal with newline characters

[egwetzel]

Hi! When assertion errors appear, they include the \n character for newlines in the assertion statement in the pytest output, even when that character is not explicitly typed in code. Could someone point me to the area of the codebase where this newline character is accounted for so that it is included with the output? I'm trying to find an entry point to work on #10704 with @HSamiul. I've looked into a couple different python documents, specifically util.py, but I'm struggling to figure out exactly where the output for the user is determined and assigned.

Thanks for the help!