初學Python，畫了個二叉樹，附效果圖和代碼

angle=15 import turtle as t def Draw(n,length): if n>0: n1=n length1=length t.right(angle) t.fd(length) n=n-1 length=length2/3 Draw(n,length) t.right(angle) t.fd(-length1)#length的值已經改變 t.left(angle2)

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