Translating Algorithm

Translating algorithm to Python Code

How to implement?
We will use a website called https://repl.it to implement algorithms

The turtle library has built-in commands that make it easy to draw an object.
To access a library in Python, you need to use the keyword import.
For example, if you want to draw a line with length 100 points, you can simply use the command forward(100).

                import turtle as t
                t.forward(100)
                t.left(90)
                t.forward(100)

Example-1

Drawing a square in Python - turtle Size of each side = 100 dots

Algorithm

Move pen forward by 100 dots

Change the angle to the left by 90 degrees

Move pen forward by 100 dots

Change the angle to the left by 90 degrees

Move pen forward by 100 dots

Change the angle to the left by 90 degrees

Move pen forward by 100 dots

Change the angle to the left by 5 degrees

         Python code
         1. import turtle as t
         2. t.forward(100)
         3. t.left(90)
         4. t.forward(100)
         5. t.left(90)
         6. t.forward(100)
         7. t.left(90)
         8. t.forward(100)
         9. t.left(5)

Repetition

         import turtle as t
         for i in range(4):
            t.forward(100)
            t.left(90)

Repetition using: for counter in range(start, end): [list of instructions]

This loop, repeats [list of instructions] from counter = start until end - 1

         import turtle as t
         for i in range(1,5):
            t.forward(100)
            t.left(90)

Some turtle commands

Drawing a circle

Syntax: turtle.circle(radius, extent = None, steps = None)
radius is the radius of the circle
extent – an angle – determines which part of the circle is drawn. If extent is not given, draw the entire circle. If extent is not a full circle, one endpoint of the arc is the current pen position.
steps determines the number of steps to use
Draw the arc in counterclockwise direction if radius is positive, otherwise in clockwise direction.

Example of drawing a circle

         import turtle as t
         t.circle(50) 
         t.circle(50,180) 
         t.circle(50,180,4)

fillcolor ( colorName )

Fills a closed shape with a color
Should be used with begin_fill() and end_fill()
Example:

t.fillcolor("red")
t.begin_fill()
t.circle( 50)
t.end_fill()

For more details, please contact me here.
Date of last modification: 2021