Local Variables and Function Scope

Functions create their own space for names. This Block shows you how local variables and parameters behave, why every function call gets a fresh set of local names, and what happens when code outside a function tries to access them.

What you will learn:

• Recognize local variables and parameters inside a function
• Predict which names are available inside and outside a function
• Understand how each function call gets fresh local values
• Read top-level variables and avoid unclear hidden dependencies
• Handle same-name variables in different scopes
• Use return to carry values across the function boundary
• Use values assigned in if/else branches safely inside a function

By the end, you will be able to trace small functions, spot common NameError mistakes, and keep values moving without turning every variable into shared state.