Draw Rainbow Circles with Python Turtle | Python Turtle Graphics Tutorial#13 |Draw Designs in Python

In this video I have explained line by line how to draw rainbow circles in python using turtle library.
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SOURCE CODE:

import turtle

mypen = turtle.Turtle()#object of turtle

window = turtle.Screen()
colors = ['red', 'orange', 'yellow', 'green', 'blue', 'indigo', 'violet']
size = 300 #radius of circle
for i in range(7):
size -= 20
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