It's becauase the argument passed to the chr() method is out of the range. Want to learn more Python for Data Science? Head over to DataCamp and try their free Python Tutorial
The second product used in this project is Liquitex pouring medium. This is a low viscosity (very fluid), clear, and high gloss acrylic medium. It is about the consistency of warm honey; quite sticky also. It can ben used with your regular heavy body paint to make them flow easier, and create cool dripping effects.
Gel mediums are ideal for extending a heavy body paint, to create impasto, relief, or sculptural effects. Gel Medium, Gloss â A high viscosity medium, it dries to a crystal clear gloss finish for sparkling, transparent impastos and textured glazes. Translucent when wet, it is transparent to translucent when dry depending on the thickness of the application.