save project

my_tree.py

@@ -5,24 +5,30 @@ 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
-
-# 移动到起点
 pen.left(90)
 pen.left(90)
 pen.up()
 pen.up()
 pen.backward(150)    # 后退
 pen.backward(150)    # 后退
 pen.down()
 pen.down()
-pen.forward(100)
-pen.right(30)
-pen.forward(100)
-pen.forward(-100)
-pen.left(60)
-pen.forward(100)
-pen.forward(-100)
-pen.right(30)
-pen.forward(-100)
-turtle.done()
+# 移动到起点
+def d(n):
+    if n>=50:
+        
+        pen.forward(n)
+        pen.right(30)
+        pen.forward(n)
+        pen.forward(-n)
+        d(n-50)
+        pen.left(60)
+        d(n-50)
+        pen.forward(n)
+        pen.forward(-n)
+        pen.right(30)
+        pen.forward(-n)
+d(100)
 
 
 
 
+    
+