rainbow.py

# This code is made by MRayan Asim
# Packages needed but my default the turtle is pre-installed if you still want to install it:
# pip install Pythonturtle
# Import turtle package
import turtle

# Creating a turtle screen object
sc = turtle.Screen()

# Creating a turtle object(pen)
pen = turtle.Turtle()


# Defining a method to form a semicircle
# with a dynamic radius and color
def semi_circle(col, rad, val):
    # Set the fill color of the semicircle
    pen.color(col)

    # Draw a circle
    pen.circle(rad, -180)

    # Move the turtle to air
    pen.up()

    # Move the turtle to a given position
    pen.setpos(val, 0)

    # Move the turtle to the ground
    pen.down()

    pen.right(180)


# Set the colors for drawing
col = ["violet", "indigo", "blue", "green", "yellow", "orange", "red"]

# Setup the screen features
sc.setup(600, 600)

# Set the screen color to black
sc.bgcolor("black")

# Setup the turtle features
pen.right(90)
pen.width(10)
pen.speed(7)

# Loop to draw 7 semicircles
for i in range(7):
    semi_circle(col[i], 10 * (i + 8), -10 * (i + 1))

# Hide the turtle
pen.hideturtle()