How to use psdtags and tifffile libraries to create multi-channel tiff files in python

I want to generate a tiff file with labeled spot color channels like the one in the link below. When opened in photoshop, there are W1 and W2 channels in the channel interface besides CMYK github.com/cgohlke/tifffile/files/11844519/origin.zip In addition to CMYK files, the UV printer also needs to add two layers of spot color channels in tiff for printing of varnish and white ink. If the varnish layer and white ink layer cannot be merged or generated through code, then I have to use photoshop to generate it manually.