Extracting PSF for a single visits image at particular coordinates

[uros2]

I am trying to inspect how the PSF changes (if it does) at particular coordinates.
Therefore, I am trying to extract PSF information (PSF size and FWHM) for each single-visit image at those coordinates (from the LSST DP1 data).
If I understand correctly, Tutorial 205.1 can provide the PSF for a single-visit image, but I’m not sure how to modify the code to get PSFs for all existing single visits.

Any help, hint, or code example would be highly appreciated!