python
sucks

In Python, identical names can exist at the same time. Why does not a variable inside a function change the variable with the same name outside it?

We already know that a variable isn't a 'memory cell' that stores a value. Python creates an object, and a name starts referring to it. But that raises a new question: where is the name itself stored?

In the previous article, we learned how to iterate over several values using a `for` loop. But what if we have a set of data that we want to store and use later?

In the previous article, we learned about the `while` loop. It is great when we do not know in advance how many times an action needs to be repeated. But very often we already know that we want to iterate over some set of data.

In the previous article, we learned how to make programs make decisions. But what should we do when an action needs to be performed many times?