LiveWithPython/myTurtle at master · horizon365/LiveWithPython · GitHub

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import turtle
myTurtle = turtle.Turtle()
myWin = turtle.Screen()

# 波浪
def drawWave(myTurtle,lineLen,n):
    if lineLen>5:
        myTurtle.left(n)
        myTurtle.forward(lineLen-10)
        myTurtle.right(n*2)
        myTurtle.forward(lineLen-10)
        myTurtle.left(n)
        myTurtle.forward(10)
        drawWave(myTurtle,lineLen-10,n)
# drawWave(myTurtle,60,20)
# 螺旋阶梯
# lineLen = 5
# while lineLen <100:
#     myTurtle.right(20)
#     lineLen += 2
#     myTurtle.forward(lineLen)

# 圆形
# while True:
#     myTurtle.right(15)
#     myTurtle.forward(50)
#     myTurtle.left(70)
#     myTurtle.forward(50)
def drawTree(myTurtle,lineLen):
    #lineLen = 50
    while lineLen>5:
        myTurtle.forward(lineLen)
        myTurtle.right(10)
        myTurtle.forward(lineLen)
        myTurtle.backward(lineLen)
        myTurtle.left(30)
        myTurtle.forward(lineLen)
        drawTree(myTurtle,lineLen-15)
        lineLen -= 10
# drawTree(myTurtle,50)

def drawStar(myTurtle=myTurtle,lineLen=20):
    for i in range(5):
        myTurtle.forward(lineLen)
        myTurtle.right(144)  # 五角星的5个角都是36度
drawStar()
myWin.exitonclick()