python

As our programs grow more complex with conditional logic (Post #25) and loops (Post #31, Post #34), it becomes increasingly likely that we will make mistakes. This is a normal and expected part of programming! A mistake in a program is called a bug, and the process of finding and fixing it is called debugging. … Read more

In Post #41, we learned the theory behind nested loops and saw how the inner loop completes its full cycle for each iteration of the outer loop. While generating combinations is useful, one of the best ways to truly understand this flow is to create something visual. In this fun, hands-on post, we will use … Read more

In Post #29, we saw how placing an if statement inside another one—a technique called nesting—allowed us to create more detailed, multi-level logic. We can apply the exact same principle to loops to solve more complex problems. In this post, we will explore the concept of nested loops. You’ll learn how a loop running inside … Read more

We’ve spent the last two posts learning how to control the flow inside our loops with break (Post #38) and continue (Post #39). Now, we’re going to look at a unique and somewhat surprising feature of Python’s loops that you won’t find in many other languages: the optional else block. This isn’t the same else … Read more

In Post #38, we learned how to use the break statement to exit a loop entirely. It’s our “emergency exit” when we’ve found what we’re looking for or need to stop the whole process immediately. But what if we don’t want to end the whole loop? What if we simply want to skip the current … Read more

So far, the loops we’ve written have all had one thing in common: they run until their natural end. A for loop runs for every item in a sequence, and a while loop runs until its condition becomes false. But what if you need to stop a loop prematurely? Imagine you are searching through a … Read more

We now have a solid understanding of both for and while loops (Post #34, Post #36). We know that for loops are the perfect tool for iterating over sequences, and so far, we’ve mostly used them with strings and the range() function. In this post, we’re going to get a sneak peek at how to … Read more

In our journey through Python’s control flow, we have now learned about two powerful tools for repetition: the while loop (Post #31) and the for loop (Post #34). Both allow you to execute a block of code multiple times, but they are designed for different situations. This post is a practical guide to help you … Read more

In Post #34, we learned that the for loop is the perfect tool for iterating over a sequence like a string or a list. But what if you don’t have a pre-existing sequence? What if you simply want to repeat a block of code a specific number of times, like 5 times or 100 times? … Read more

In our previous posts, we learned about the while loop. It’s a fantastic tool for repeating a block of code as long as a condition is true, especially when we don’t know how many repetitions we’ll need, like in our menu project from Post #33. But what if our goal is different? What if we … Read more