import win32com.client
from pathlib import Path

class transformer11:
    def __init__(self):
        self.tr = win32com.client.Dispatch("IBMCognosTransformer.ApplicationCtrl.1")
        print(self.tr.Version)
        self.tr.Visible = True

    def open(self, file, format = None): 
        filename = Path(file).resolve()
        print(filename)
        self.tr.OpenModel(filename)

  

if __name__ == "__main__":
    transformer11().open("Transformer11\\V_Verkauf.pyj")