http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/528868

 
import win32com.client
ag=win32com.client.Dispatch("Agent.Control")
ag.Connected=1
ag.Characters.Load("Merlin")
ag.Characters("Merlin").Show()
text = raw_input("please type something...")
ag.Characters("Merlin").Think(text)

 
import win32com.client
acad = win32com.client.Dispatch("AutoCAD.Application")
 
doc = acad.ActiveDocument   # Document object
ms = doc.ModelSpace         # Modelspace "collection"
count = ms.Count            # Number of items in modelspace
 
for i in range(count):
    item = ms.Item(i)
    if 'text' in item.ObjectName.lower(): # Text objects are AcDbText
        # once we know what it is we can cast it
        text = win32com.client.CastTo(item, "IAcadText") 
        if text.TextString == "Spam":
            text.TextString = "Maps"
            text.Update()

This is a PDF Batch Converter extension for Adobe Acrobat and Acrobat 3D. This tool converts 3D CAD models to 3D-PDF as well as Office documents to PDF and works in following modes:

• Convert single files
• Convert files in a directory in batch
• Converts a type of files with wildcards like *.CATPart, *.prt, *.model, ...
• Works as a deamon which watches into a directory (directory watcher)