[Python知识库]python3

#绘制蟒蛇
turtle.penup()  # 抬起笔
 turtle.fd(-250)#向前方运行
 #bk()反方向
 turtle.pendown()  # 落下笔
 turtle.pensize(25)  # 画笔线条宽度
 turtle.pencolor("purple")  # 画笔颜色
 turtle.seth(-40)#只改变当前行进方向，但不行进
 for i in range(4):
     turtle.circle(40,80) # 曲线运行，半径为40，旋转角度80
     turtle.circle(-40,80)
 turtle.circle(40,80/2)
 turtle.fd(40)
 turtle.circle(16,180)
 turtle.fd(40*2/3)
 turtle.done()

#绘制矩形
import turtle as t
t.pensize(2)
for i in range(4):
    t.fd(150)
    t.left(90)
t.done()


# 绘制六边形
import turtle as t
t.pensize(5)
t.pencolor("red")
for i in range(6):
    t.fd(150)
    t.left(60)
t.done()


import turtle as t
t.pensize(2)
for i in range(4):
    t.seth(90*i)
    t.fd(150)
    t.right(90)
    t.circle(-150, 45)
    t.goto(0,0)# 指定坐标