Solving the turtle.setpos() Problem: Drawing a Grid of Squares in Python

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Understanding the Problem

Imagine you’re trying to create a grid of squares on both the x and y axes using Turtle Graphics. You might start off by setting up a while loop for the x axis, but you soon realize that the squares aren’t being drawn along the y axis. This can be frustrating, especially if you are not sure where to make changes in your code.

Let’s explore how to fix this issue step-by-step!

The Original Code

Here’s a quick look at the initial code you might start with:

[[See Video to Reveal this Text or Code Snippet]]

Key Issues

The y variable is initialized at 300, which means the second while loop that intends to draw squares down the y axis never runs.

The square() function is called outside of the loops, leading to only the final position being drawn.

The Solution

To successfully create a grid of squares, you need to make a couple of adjustments to your code:

Call the square() function within both while loops.

Make sure the while loop for the y axis runs correctly by modifying the condition in the loop.

Here’s the corrected code:

[[See Video to Reveal this Text or Code Snippet]]

Breakdown of the Updated Code

Drawing the x-axis Squares:

The first while loop runs, incrementing x by 100 each time and drawing a square at the current x position.

Drawing the y-axis Squares:

The second while loop decrements y until it reaches 0, ensuring at each iteration that a square is drawn at the current y position for the last value of x.

Conclusion

Using these simple changes, you should now be able to create a neatly aligned grid of squares along both axes! Turtle Graphics is a fun way to visualize coding concepts, and with a little debugging, you can create beautiful patterns with ease.

If you have any questions or further challenges with Turtle, feel free to reach out!