save project

my_tree.py

@@ -7,9 +7,24 @@ w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 
 # 移动到起点
+pen.speed(10000000000000)
 pen.left(90)
 pen.up()
 pen.backward(150)    # 后退
 pen.down()
 
+def tree(m,n):
+    if m >= 0:
+        pen.forward(m)
+        pen.right(n)
+        tree(m-10,n)
+        pen.left(n*2)
+        tree(m-10,n)
+        pen.right(n)
+        pen.up()
+        pen.backward(m)
+        pen.down()
+
+tree(100,30)
+
 turtle.done()