# How to create a "sage program" with command line input

I am completely new to Sage and Pyhton, so this is probably a very trivial question, but I am not able to find any answer. I have a file script.sage

```
N=10
sage_command1
sage_command2
sage_command3
print(result)
```

I use this script via `sage script.sage`

and it does what I want. How can I modify this so that I can pass the variable `N`

in the command line? Something like `sage script.sage 10`

and then it prints the result.

Thank you!