save project

my_tree.py

@@ -5,32 +5,20 @@ pen.color('sienna')
 # 画布大小
 # 画布大小
 w = turtle.Screen()
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 w.bgcolor('wheat')      # wheat小麦
+
+pen.goto(0,0)# 移动到起点
 pen.left(90)
 pen.left(90)
-def tree(n):
-    if n>=50:
-        pen.forward(n)
-        pen.right(30)
-        tree(n-10)
-        pen.left(60)
-        tree(n-10)
-        pen.right(30)
-        pen.up()
-        pen.backward(n)
-        pen.down()
-tree(70)
-# pen.goto(0,0)# 移动到起点
-# pen.left(90)
-# pen.forward(100)
-# pen.left(30)
-# pen.forward(50)
-# pen.up()
-# pen.backward(50)    # 后退
-# pen.down()
-# pen.right(60)
-# pen.forward(50)
-# pen.up()
-# pen.backward(50)    # 后退
-# pen.left(30)
-# pen.backward(100)
+pen.forward(100)
+pen.left(30)
+pen.forward(50)
+pen.up()
+pen.backward(50)    # 后退
+pen.down()
+pen.right(60)
+pen.forward(50)
+pen.up()
+pen.backward(50)    # 后退
+pen.left(30)
+pen.backward(100)
 
 
 turtle.done()
 turtle.done()