save project

diy2.py

 import turtle
 import turtle
 
 
+def tree(n):
+    if n >= 50:
+        pen.forward(n)
+        pen.right(30)
+        tree(n-10)
+        pen.left(60)
+        tree(n-10)
+        pen.right(30)
+        pen.up()
+        pen.backward(n)
+        pen.down()
 pen = turtle.Turtle()
 pen = turtle.Turtle()
 pen.color('sienna')
 pen.color('sienna')
 #画布大小
 #画布大小
@@ -8,21 +19,9 @@ w.bgcolor("wheat")
 #移动到起点
 #移动到起点
 pen.left(90)
 pen.left(90)
 pen.up
 pen.up
-pen.backward(150)
+pen.backward(100)
 pen.down
 pen.down
 
 
-#分形树
-def tree(n):
-    if n >= 50:
-        pen.forward(n)
-        pen.right(30)
-        tree(n-50)
-        pen.left(60)
-        tree(n-50)
-        pen.right(30)
-        pen.up()
-        pen.backward(n)
-        pen.down()
 tree(100)
 tree(100)
 turtle.done()
 turtle.done()