Why does output redirection not work in this case?

Question

OS is ubuntu12.04. I wrote a python program main.py, and wanted to run it easily. So I created the following shell script called run.sh.

#!/bin/bash

python main.py & >/dev/null  2>&1

And executed this command chmod u+x run.sh.

However, when I ./run.sh, the python program's output is still there in the terminal.
But this can work: ./run.sh >/dev/null 2>&1. But this way is against my original intention, since it's too complex to use.

I wonder why this could happen. And how can I achieve my intention?

Answer 1

If you want to run script at the background try this:

python main.py >/dev/null  2>&1 &