save project

diy1.py

@@ -21,24 +21,43 @@ result = func(6)
 print(result)
 '''
 import turtle as t
+import random
+
+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 = t.Turtle()
 pen.color('sienna')
 w =  t.Screen()
 w.bgcolor('wheat')
-
+#准备工作
 pen.left(90)
 pen.up()
 pen.backward(150)
 pen.down()
 
-pen.forward(100)
+#准备工作*2
+
+
+'''pen.forward(100)
 pen.right(30)
 pen.forward(50)
 pen.up()
 pen.backward(30)
 pen.left(60)
 pen.down()
-pen.forward(50)
+pen.forward(50)'''
+tree(90)
+t.done()
+