#Spiral christmas tree design how to#
#Spiral christmas tree design code#

The critical point is it’s all about iteration. To take home, there are many ways you can draw a Christmas tree.

#Spiral christmas tree design how to#

Today you learned how to draw a Christmas tree in Python by using asterisks (*). For example, calling draw_tree(15, 3) gives a result like this: Summary To clarify, if you set the level parameter to something else than 1, you will end up with a truncated Christmas tree. When you call the draw_tree() function and pass it a height and a starting level (usually 1), it will print a Christmas tree with that height using asterisks (*).įor example, if you call draw_tree(5, 1), it will print a Christmas tree with a height of 5: If the level is not equal to the height, it prints the asterisks on the current level, then calls itself recursively with the next level. The function checks if the level is equal to the tree’s height, and returns if it is.

#Spiral christmas tree design code#

This code defines a draw_tree() function that takes a height and a level as arguments, and uses recursion to print the asterisks in the shape of a Christmas tree. # Call the function recursively with the next level # Return if the level is equal to the height # Check if the level is equal to the height of the tree

Here is an example of how to do this: # Function to draw a Christmas tree with a given height and level To draw a Christmas tree using asterisks (*) in Python, you can use a recursive function that takes the height and level of the tree as arguments, and prints the asterisks in the shape of a tree. It takes a moment to wrap your head around recursion. If this is the first time you hear about recursion, you should read a separate article about the topic before proceeding. In case you’re unfamiliar with recursion, it means that a function calls itself causing a loop-like code structure. Last but not least, let’s use a recursive approach for printing the Christmas tree. When you call the draw_tree() function and pass it a height, it will print a Christmas tree with that height using asterisks (*).įor example, if you call draw_tree(15), it will print a Christmas tree with a height of 15: 3. Once again, the outer loop iterates through each row of the tree, and the inner loop prints the asterisks on each row. This piece of code defines a draw_tree() function that takes a height as an argument and uses two nested while loops to print the asterisks in the shape of a Christmas tree. # Loop while the row number is less than or equal to the height of the tree # Set the initial values for the while loop Here’s what it looks like in the code: # Function to draw a Christmas tree with a given height

To draw a Christmas tree in Python, let’s use a while loop to print the asterisks in the shape of a tree. More importantly, if you’re new to loops, you should definitely try reproducing the tree in the previous example using a while loop. The for-loop approach is the simplest one to generate a Christmas tree in Python.īut it doesn’t mean you couldn’t do it with a while loop. When you call the draw_tree() function and pass it a height, it will print a Christmas tree with the given height.įor instance, if you call draw_tree(5), it prints a Christmas tree like follows: 2. The number of spaces before the asterisks and the number of asterisks on each row is calculated based on the height of the tree. The inner for loop prints the asterisks on each row.The outer for loop iterates through each row of the tree.It takes a height as an argument and uses two nested for loops to print the asterisks in the shape of a Christmas tree. This piece of code defines a draw_tree() function. # Call the function to draw a tree with a height of 5 # Print the spaces before the asterisks on each row # Function to draw a Christmas tree with a given height