Remove the containing square brackets, enclose your path in ", and since this is python, you'll need to escape your backslashes using another \, or use forward slashes instead.
All together your first line should be something like
path = system.file.openFile(
"G:\\DeptDrive\\awhs\\ASRS MAINTENANCE\\Archive\\ASRS M..."
)
or the better(proper) way:
path = system.file.openFile(
"G:/DeptDrive/awhs/ASRS MAINTENANCE/Archive/ASRS M..."
)
If you scroll further down in the manual link that Kevin provided you should see example code.
Also, when posting code, please post it as formatted text, see Wiki - how to post code on this forum. It makes it easier for others to copy/test code instead of having to read off a picture and manually retype it.
As a warning, if this is a shared network drive you should be using full UNC paths instead of the mapped drive letter.