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.
Now lets take a look at the types of acrylic mediums and additives you can use with acrylic paint: Gloss Medium, Matte Medium, Glazing Medium, Gel Medium, Modeling Paste, Texture Gels, Retarding Medium, and Flow Improver. Few Parting Tips. 1  Always mix in the medium after you've mixed the colors together. 2  Don't use oil mediums with acrylics because they aren't compatible. 3  Some medium products claim that they can also be used to varnish your paintings. 4  I recommend you use a removable varnish as a final top coat instead of a medium.