Discover seven essential techniques and idioms that experienced Python 3 programmers utilize but may not be immediately apparent to newcomers. Explore how to make your programs more reliable, faster, and easier to maintain while avoiding common pitfalls. Dive into code examples that cover topics such as code execution, empty lists, sentinel objects, floating-point arithmetic, number types, decimals and fractions, failure modes of floats, binary representation of floats, computational geometry, and Python quirks. Learn about chain comparisons and how to reduce work in your code. Gain valuable insights that will set your Python journey on the right path and enhance your programming skills.