# Fractal trees in Python

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Introduction A fractal tree is known as a tree that can be created by recursively symmetric branching.

A trunk of length 1 splits into two branches of length r, each of which forms an angle q with the direction of the barrel. Both of these branches are divided into two branches of length r * r, each of which makes an angle q with the direction of its parent branch. Continuing in this way an infinite number of branches, a tree is a collection of branches together with their limiting points, called branch tips.

Enough theory, now let’s try the implementation in Python. For this we need two Python libraries Pygame for the GUI or GUI and math, which is a built-in library in Python and will be used for math tweaks.

To install Pygame

` pip install pygame `

So how to proceed, it is highly recommended that you know a little about pygmies and fractals.

First create trunk, and then start creating branches for each trunk, assuming the branch size to be 0.9 * (stem length) and then treating the branches as a stem again, repeating the process.

 ` # Importing python libraries ` ` import ` ` pygame, math ` ` # Initialize cue all imported Pygame modules ` ` pygame.init () ` ` # Create a new surface and window. ` ` surface_height, surface_width ` ` = ` ` 800 ` `, ` ` 600 ` ` # Surface Variables ` ` main_surface ` ` = ` ` pygame.display.set_mode ((surface_height, surface_width)) ` ` ` ` # Window title ` ` pygame.display.set_caption (` ` "Fractal_Tree_pythonengineering" ` `) ` ` def ` ` draw_tree (order, theta, sz, pos n, heading, color ` ` = ` ` (` ` 0 ` `, ` ` 0 ` `, ` ` 0 ` `), depth ` ` = ` ` 0 ` `) : ` ` The relative ratio of the trunk to the entire tree ` ` ` ` trunk_ratio ` ` = ` ` 0.29 ` ` # Barrel length ` ` trunk ` ` = ` ` sz ` ` * ` ` trunk_rati o ` ` delta_x ` ` = ` ` trunk ` ` * ` ` math.cos (heading) ` ` delta_y ` ` = ` ` trunk ` ` * ` ` math.sin (heading) ` ` ` ` (u, v) ` ` = ` ` posn ` ` newpos ` ` = ` ` (u ` ` + ` ` delta_x, v ` ` + ` ` delta_y) ` ` pygame.draw.line (main_surface, color , posn, newpos) ` ` if ` ` order & gt; ` ` 0 ` `: ` ` # Draw another layer of subtrees ` ` # Next six lines - simple hack ` ` # the two main halves of the recursion are different ` ` # colors. Fiddle here to change colors to another ` ` # depths, or when the depth is even or odd , etc. ` ` if ` ` depth ` ` = ` ` = ` ` 0 ` `: ` ` ` ` color1 ` ` = ` ` (` ` 255 ` `, ` ` 0 ` `, ` ` 0 ` `) ` ` color2 ` ` = ` ` ( ` ` 0 ` `, ` ` 0 ` `, ` ` 255 ` `) ` ` else ` `: ` ` color1 ` ` = ` ` color ` ` color2 ` ` = ` ` color ` ` # make recursive calls to draw two subtrees ` ` newsz ` ` = ` ` sz ` ` * ` ` (` ` 1 ` ` - ` ` trunk_ratio) ` ` draw_tree (order - 1 , theta, newsz, newpos, heading - theta, color1, depth + 1 ) `` draw_tree (order - 1 , theta, newsz, newpos, heading + theta, color2, depth + 1 ) def main (): theta = 0 while True : # Update corner theta + = 0.01 # This little part lets us draw things # everything on screen main_surface.fill (( 255 , 255 , 0 )) draw_tree ( 9 , theta, surface_height * 0.9 , (surface_width / / 2 , surface_width - 50 ), - math.pi / 2 ) pygame.display.flip () # Calling the main function main () pygame.quit () `

Exit:

` % MINIF YHTMLc707a572199fb7b4b8a82374bf37b87213%      `

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## Fractal trees in Python __del__: Questions

How can I make a time delay in Python?

I would like to know how to put a time delay in a Python script.

2973

``````import time
time.sleep(5)   # Delays for 5 seconds. You can also use a float value.
``````

Here is another example where something is run approximately once a minute:

``````import time
while True:
print("This prints once a minute.")
time.sleep(60) # Delay for 1 minute (60 seconds).
``````

2973

You can use the `sleep()` function in the `time` module. It can take a float argument for sub-second resolution.

``````from time import sleep
sleep(0.1) # Time in seconds
``````

## Fractal trees in Python __del__: Questions

How to delete a file or folder in Python?

How do I delete a file or folder in Python?

2639

`Path` objects from the Python 3.4+ `pathlib` module also expose these instance methods:

We hope this article has helped you to resolve the problem. Apart from Fractal trees in Python, check other __del__-related topics.

Want to excel in Python? See our review of the best Python online courses 2023. If you are interested in Data Science, check also how to learn programming in R.

By the way, this material is also available in other languages:

Walter Schteiner

London | 2023-04-01

io Python module is always a bit confusing 😭 Fractal trees in Python is not the only problem I encountered. Will get back tomorrow with feedback

Angelo Sikorski

Berlin | 2023-04-01

I was preparing for my coding interview, thanks for clarifying this - Fractal trees in Python in Python is not the simplest one. I just hope that will not emerge anymore

Manuel Nickolson

Massachussetts | 2023-04-01

Maybe there are another answers? What Fractal trees in Python exactly means?. Will use it in my bachelor thesis

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