I used to work with an eye tracker Tobii Pro and wrote a Python script using PyGaze. I recently had to change of tracker and got a
You can see the various available SDKs for their products on their website. Apparently you have no less than three of them:
Note that licensing of the SDKs vary.
As stated on an early post, for assistance in development using the Tobii Pro SDK, you should reach out to Tobii Pro Support directly. The Python Binding of the Pro SDK does come with sample applications that demonstrate how to capture gaze data directly.
Nevertheless, I am trying to develop a solution, also, around this issue. You can follow it here. It is under development, but still, you can wait for some news there.