Articles

The problem...
You've built the Username Generator before. It worked — but it was one long script. Top to bottom. No structure. No reuse.
Time to rebuild it the right way.…

The problem...
You've built the BMI Calculator before. It asked for input, calculated, and printed. One long block.
Now you have parameters. Same logic — but cleaner.
The…

The problem...
Your functions calculate things. They print things. But the result stays inside the function — and disappears when the function ends.
You can't use it. You …

The problem...
Your Username Generator function calculates and prints — all in one place. That works. But what if you want to use the username somewhere else? Store it. Pas…

The problem...
Your BMI Calculator calculates and prints — all in one function. But you can't use the BMI value anywhere else. You can't check the category. You can't store…

The problem...
You define a variable inside a function. You try to use it outside. Python says it doesn't exist.
Or you define a variable outside and try to change it inside a f…