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.
Tri-Art Polymer Mediums have a similar consistency to Tri-Art Liquid Acrylic paint-the ideal medium for extending color and creating rich glazes. Tri-Art Modeling paste provides a high relief textured ground that can even be sanded or carved! Tri-Art Gessos are smooth, flexible, sand-able and absorbent.