save project

my_tree.py

@@ -5,37 +5,20 @@ pen.color('sienna')
 
 
 w = turtle.Screen()
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 w.bgcolor('wheat')      # wheat小麦
-pen.left(90)
-pen.speed(0)
 
 
-def tree(n):
-    if n>=50:
-        pen.fd(n)
-        pen.right(30)
-        tree(n-10)
-        pen.left(30)
-        pen.left(30)
-        tree(n-10)
-        pen.right(30)
-        pen.pu()
-        pen.backward(n)
-        pen.pd()
-pen.pu()        
-pen.backward(150)
-pen.pd()
-a=tree(100)
 
 
-#pen.left(90)
-#pen.fd(100)
-#pen.left(30)
-#pen.fd(100)
-#pen.up()
-#pen.backward(100) 
-#pen.pd()
-#pen.right(60)
-#pen.fd(100)
-#pen.pu()
-#pen.backward(100)   # 后退
-#pen.down()
+# 移动到起点
+pen.left(90)
+pen.fd(100)
+pen.left(30)
+pen.fd(100)
+pen.up()
+pen.backward(100) 
+pen.pd()
+pen.right(60)
+pen.fd(100)
+pen.pu()
+pen.backward(100)   # 后退
+pen.down()
 
 
 turtle.done()
 turtle.done()