Explore the hidden intricacies of Python's runtime in this 30-minute EuroPython Conference talk. Delve into the events occurring behind the scenes during program execution, typically concealed from users. Learn how to access and utilize this valuable information directly within Python code, without additional libraries or interpreter configurations. Discover the power of inspecting program state during execution, examining Python variables and frame objects. Gain insights into practical tools based on runtime information that can enhance daily programming tasks. From understanding assertion errors to leveraging debuggers, code coverage tools, and type checkers, uncover the hidden potential within Python's runtime to improve development practices and code quality.