Python works with data all the time. Every line of code touches data in some form. Lists, sets, and dictionaries look simple when we use them, but internally they follow strict rules. These rules decide how memory is used and how fast the program reacts. Many learners in advanced paths like a Python with AI Course  feel Python is slow at scale. In most cases, the issue is not Python. It is how data structures are used without knowing what happens underneath. Python today runs