Cloud 9 Python Debugging error when using parameters

When executing a python file with parameters in debug mode:

python app.py -i conf.ini

it fails with this error:


usage: ikp3db.py [-h] [-ik_a IKPDB_ADDRESS] [-ik_p IKPDB_PORT]
                 [-ik_l IKPDB_LOG] [-ik_w IKPDB_SEND_WELCOME_MESSAGE]
                 [-ik_s IKPDB_STOP_AT_ENTRY] [-ik_cwd IKPDB_WORKING_DIRECTORY]
                 [-ik_ccwd IKPDB_CLIENT_WORKING_DIRECTORY] [-ik_vc] [-ik_v]
                 ...
ikp3db.py: error: ambiguous option: -i could match -ik_a, -ik_p, -ik_l, -ik_w, -ik_s, -ik_cwd, -ik_ccwd, -ik_vc, -ik_v

However, if you rename the parameter it works:

python app.py -input conf.ini