how could i cancel -u when runing python script?

I'm trying to run a python script 

python -m torch.distributed.launch --nproc_per_node=8 train_net.py

set "-m torch.distributed.launch --nproc_per_node=8 \" in interpreter options and  click the run button, the runing  command is just like this 

python -m torch.distributed.launch --nproc_per_node=8 \ -u train_net.py

the ide automatically add -u option so the script cannot run and debug."python: can't open file ' -u': [Errno 2] No such file or directory"

how could i solve it?