auto save

my_tree.py

@@ -5,7 +5,7 @@ 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
-bef tree(n)
+def tree(n):
     if n>50:
     if n>50:
         pen.forward(n)
         pen.forward(n)
         pen.right(30)
         pen.right(30)