Compute full file paths so program can be run from another path

[answerquest]

Problem description

If we run the program by command-line or shortcut from another working folder, example:

python3 some/folder/path/GTFSManager.py

Then the program errors out because it is unable to find the supporting files in the working path.

Expected Action

Program should run no matter where it's called from.

Anything else

We were already computing the absolute path in order to launch Tornado web server.

root = os.path.dirname(__file__) # needed for tornado

So, simply pre-pend the path stored in root variable to all the external file / folder paths.

uploadFolder = os.path.join(root,'uploads/')
xmlFolder = os.path.join(root,'xml_related/')
logFolder = os.path.join(root,'logs/')
configFolder = os.path.join(root,'config/')
dbFolder = os.path.join(root,'db/')
exportFolder = os.path.join(root,'export/')