No, there are no problems with filesystem. You can read
TXT file as a whole and save it in variable, or you can read
text as a list - in that case every line from TXT document
becomes new item in list variable, so you need to treat it
as a list and use list module to manipulate it.
@telim2
Run Process runs the code as a batch file. No need to open CMD and if any program needs the cmd window (node.js server for example) it will open it as such once the desired line is executed.
When a batch file is run, the shell program (cmd.exe) reads the file and executes its commands, normally line-by-line.