Generally no.
I don't have exercises or assignments in my books.
I do have end-to-end projects in some of the books, but they are in a tutorial format where I lead you through each step.
The book chapters are written as self-contained tutorials with a specific learning outcome. You will learn how to do something at the end of the tutorial.
Some books have a section titled "Extensions" with ideas for how to modify the code in the tutorial in some advanced ways. They are like self-study exercises.