save project

my_tree.py

@@ -12,7 +12,7 @@ def tree(n):
         pen.backward(n)
         pen.down()
 
-tree(100)
+
 
 
 pen = turtle.Turtle()
@@ -22,6 +22,10 @@ w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 
 # 移动到起点
+pen.left(90)
+pen.up()
+pen.backward(150)
+pen.down()
 
-
+tree(100)
 turtle.done()