import turtle

t = turtle.Turtle()
s = turtle.Screen()
s.bgcolor('black')
t.speed(0)
col = ('gold', 'cyan')

for i in range(300):
t.pencolor(col[i%2])
t.width(2)
t.forward(i)
t.right(89)
t.forward(i*2)
t.right(89)

turtle.done()

import turtle as t
import colorsys
t.bgcolor('black')
t.pencolor('cyan')
t.tracer(2)
t.hideturtle()

def VastCoding():
for i in range(4):
t.fd(200)
t.right(90)

for j in range(500):
VastCoding()
t.goto(0, 0)
t.rt(2)

t.exitonclick()

import turtle as t
import colorsys
t.bgcolor('black')
t.tracer(2)
hue = 0.3
t.hideturtle()

def VastCoding():
global hue
for i in range(4):
color = colorsys.hsv_to_rgb(hue, 1,1)
hue+= 0.010
t.pencolor(color)
t.fd(200)
t.right(90)

for j in range(500):
VastCoding()
t.goto(0, 0)
t.rt(2)

t.exitonclick()

import turtle
import colorsys

t = turtle.Turtle()
s = turtle.Screen()
s.colormode(255)
t.speed(0)
t.width(2)
s.bgcolor('black')
t.pencolor(110, 222, 22)

def shape(angle, side, limit):
reverseDirection = 200
t.fd(side)

if side % (reverseDirection*2) == 0:
angle =angle +2
print(side)

elif side % reverseDirection == 0:
angle = angle-2
print(side)
t.right(angle)
side = side + 2

if side < limit:
shape(angle, side, limit)
angle = 119
side = 0
limit = 600
shape(angle, side, limit)
turtle.done()

from turtle import *

bgcolor('black')
speed(0)

for i in range(180):
color('red')
circle(i)
color('yellow')
circle(i*0.7)
right(9)
forward(2)

done()