PyGaze

What PyGaze is

PyGaze is a free, open-source toolbox for running eye-tracking experiments in Python. It presents a common interface for stimulus presentation and communication with eye trackers, including EyeLink, SMI, Tobii and mouse-simulated tracking modes. For stimuli, PyGaze supports PsychoPy and PyGame. The EyeTracker interface includes calibration, recording, gaze sampling, pupil-size retrieval, and functions for fixation and saccade events. Its gaze-contingent tools include forced retinal location, a gaze-following cursor and areas of interest. PyGaze supports Windows, Linux and macOS, with pip instructions, source packages and portable Windows environments listed as download options. The about page recommends Python 2.X and describes its intended users as people with minor to advanced programming skills. Some tracker connections have separate requirements: PyLink is proprietary and requires SR Research registration, while SMI and Tobii API downloads must be requested from their makers. Fresh gaze samples arrive at the eye tracker's sampling rate; between fresh samples, PyGaze returns the newest available one.