OS. Initiate OpenSTAAD in Python

Note: You must have a model open in STAAD.Pro for this example. Otherwise your code will return an error.

Type the following statements and press Return at the end of each statement:
```
from comtypes import automation
from comtypes import client
import ctypes
```
This uses the comtypes library to allow you to use COM objects (such as OpenSTAAD).
Type os = client.GetActiveObject("StaadPro.OpenSTAAD") and then press Return.

This initiates OpenSTAAD and connects to the current STAAD.Pro model to your program.

Your program at this point should look like:

from comtypes import automation
from comtypes import client
import ctypes
os = client.GetActiveObject("StaadPro.OpenSTAAD")