Python turtle库绘图--turtle的使用

#画图
import turtle
turtle.screensize(400,300,"green")
turtle.pencolor("yellow")
turtle.pensize(2)
for i in range(10):
    turtle.forward(i*10)
    turtle.right(120)
    #turtle.right(70)
turtle.done()

#画太阳花：
import turtle as t
import time
t.color("red", "yellow")
t.speed(10)
t.begin_fill()
for _ in range(50):
    t.forward(200)
    t.left(170)
t.end_fill()
time.sleep(1)

#画蛇
import turtle


def drawSnake(rad, angle, len, neckrad):
    for _ in range(len):
        turtle.circle(rad, angle)
        turtle.circle(-rad, angle)
    turtle.circle(rad, angle/2)
    turtle.forward(rad/2)  # 直线前进
    turtle.circle(neckrad, 180)
    turtle.forward(rad/4)


if __name__ == "__main__":
   turtle.setup(1500, 1400, 0, 0)
   turtle.pensize(30)  # 画笔尺寸
   turtle.pencolor("green")
   turtle.seth(-40)    # 前进的方向
   drawSnake(70, 80, 2, 15)

#画五角星
import turtle
import time


turtle.pensize(5)
turtle.pencolor("yellow")
turtle.fillcolor("red")
 
turtle.begin_fill()


for _ in range(5):
    turtle.forward(200)
    turtle.right(144)
turtle.end_fill()
time.sleep(1)

#彩色图
import turtle
import time
turtle.pensize(2)
turtle.bgcolor("black")
colors = ["red","yellow","purple","blue"]
turtle.tracer(False)
for x in range(400):
    turtle.forward(2*x)
    turtle.color(colors[x % 4])
    turtle.left(91)
turtle.tracer(True)
time.sleep(20)