Update readme.md

Author: piyush-sri

Python Projects/Intermediate Games/Spirograph/readme.md

@@ -12,16 +12,50 @@ This program allows you to create a spirograph using Python's turtle module. A s
 2. Open the terminal/command prompt and navigate to the directory where the files are located
 
 3. Run the following command to start the program:
-'''cmd
+```cmd
   python spirograph_turtle.py
-'''
+```
 4. The spirograph will be drawn on the turtle window. You can close the window once the drawing is complete.
 
 # Live Demo
 https://user-images.githubusercontent.com/67270567/226445938-1d5e2b6e-8ed3-4e7d-8064-139ca8ef9b02.mp4
 
 Play the Video to see the Output
 
+##  Line By Line Explanation of the Sourcecode
+
+```python
+  import turtle as t
+  import random
+```
+1. In this line, we import the turtle moduleThe code imports the turtle module and renames it as t for ease of use. It also imports the random module for generating random colors.
+
+```python
+  tim = t.Turtle()
+  t.colormode(255)
+```
+2. Here, we create a turtle object called "tim". We also set the color mode to 255. This means that the colors we choose will be in the range of 0 to 255, instead of 0 to 1.
+
+```python
+  def random_color():
+    r = random.randint(0, 255)
+    g = random.randint(0, 255)
+    b = random.randint(0, 255)
+    color = (r, g, b)
+    return color
+```
+3. The code defines a function random_color() that generates a random RGB color by generating random values for red, green, and blue components of the color, and returning the tuple of the three values.
+
+```python
+  def draw_spirograph(size_of_gap):
+    for _ in range(int(360 / size_of_gap)):
+        tim.color(random_color())
+        tim.circle(100)
+        tim.setheading(tim.heading() + size_of_gap)
+        tim.speed(20)
+```
+4.  
+
 ## Customization
 You can customize the appearance of the spirograph by changing the following values in the code: