Hi Andrey,

Thanks for your post here on the forums!

If you check the sample codes provided with OpticStudio in the ZOS-API Syntax help, or the boilerplate code, you can see that the python codes start as the following:

class PythonStandaloneApplication1(object):


    class LicenseException(Exception):


        pass


    class ConnectionException(Exception):


        pass


    class InitializationException(Exception):


        pass


    class SystemNotPresentException(Exception):


        pass


    def __init__(self, path=None):


        # determine location of ZOSAPI_NetHelper.dll & add as reference


        aKey = winreg.OpenKey(winreg.ConnectRegistry(None, winreg.HKEY_CURRENT_USER), r'Software\Zemax', 0, winreg.KEY_READ)


        zemaxData = winreg.QueryValueEx(aKey, 'ZemaxRoot')


        NetHelper = os.path.join(os.sep, zemaxData[0], r'ZOS-API\Libraries\ZOSAPI_NetHelper.dll')


        winreg.CloseKey(aKey)


        clr.AddReference(NetHelper)


        import ZOSAPI_NetHelper


        


        # Find the installed version of OpticStudio


        #if len(path) == 0:


        if path is None:


            isInitialized = ZOSAPI_NetHelper.ZOSAPI_Initializer.Initialize()


        else:


            # Note -- uncomment the following line to use a custom initialization path


            isInitialized = ZOSAPI_NetHelper.ZOSAPI_Initializer.Initialize(path)


        


        # determine the ZOS root directory


        if isInitialized:


            dir = ZOSAPI_NetHelper.ZOSAPI_Initializer.GetZemaxDirectory()


        else:


            raise PythonStandaloneApplication1.InitializationException('Unable to locate Zemax OpticStudio.  Try using a hard-coded path.')

In the above section, there are two ways for the initialization, one without any given path, in which case the default path is used, and a second one with a given path, in which case the API code searches for OpticStudio at that specifc given location. 

If you would like to run a specific version of OpticStudio, you can customize the initialization with the path where the specific version of OpticStudio that you would like to run is installed.

I hope this helps, but if you have any further questions, please let us know and we will be happy to help!

Best,


Csilla

Hi Csilla,

Thank you for your answer!