auto save

my_tree.py

@@ -6,19 +6,24 @@ pen.color('sienna')
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 
-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)
+def tree(n):
+    if n>=50:
+        pen.forward(n)
+        pen.right(30)
+        tree()
+# pen.goto(0,0)# 移动到起点
+# pen.left(90)
+# pen.forward(100)#画树干
+# pen.left(30)
+# pen.forward(50)#画左边树枝并返回
+# pen.up()
+# pen.backward(50)    # 后退
+# pen.down()
+# pen.right(60)
+# pen.forward(50)#画右边树枝并返回
+# pen.up()
+# pen.backward(50)    # 后退
+# pen.left(30)
+# pen.backward(100)#树干返回
 
 turtle.done()