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.
Save. Artists mix certain media with paint to achieve various artistic effects. Gel medium alters the consistency of paint, adding sheen and volume, and making texture from brush and knife marks more visible. It also increases the drying time, giving the artist more time to create the desired effects. The ingredients of gel medium vary, but it always consists of a thinner and a drying oil. Gel medium is available for purchase at art supply stores and online, but some artists prefer to make it themselves.