Python : Turtle库--3.8彩虹

from turtle import *

def HSB2RGB(hues):
hues = hues * 3.59 #100转成359范围
rgb=[0.0,0.0,0.0]
i = int(hues/60)%6
f = hues/60 -i
if i == 0:
rgb[0] = 1; rgb[1] = f; rgb[2] = 0
elif i == 1:
rgb[0] = 1-f; rgb[1] = 1; rgb[2] = 0
elif i == 2:
rgb[0] = 0; rgb[1] = 1; rgb[2] = f
elif i == 3:
rgb[0] = 0; rgb[1] = 1-f; rgb[2] = 1
elif i == 4:
rgb[0] = f; rgb[1] = 0; rgb[2] = 1
elif i == 5:
rgb[0] = 1; rgb[1] = 0; rgb[2] = 1-f
return rgb

def rainbow():
hues = 0.0
color(1,0,0)
#绘制彩虹
hideturtle()
speed(100)
pensize(3)
penup()
goto(-400,-300)
pendown()
right(110)
for i in range (100):
circle(1000)
right(0.13)
hues = hues + 1
rgb = HSB2RGB(hues)
color(rgb[0],rgb[1],rgb[2])
penup()

def main():
setup(800, 600, 0, 0)
bgcolor((0.8, 0.8, 1.0))
tracer(False)
rainbow()
#输出文字
tracer(False)
goto(100,-100)
pendown()
color(“red”)
write(“诺心网络”,align=“center”,
font=(“Script MT Bold”, 80, “bold”))
tracer(True)

mainloop()

if name == “main”:
main()

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