save project

my_tree.py

@@ -3,12 +3,15 @@ import random
 
 def tree(n):
     if n>=0:
+        pen.pensize(n/10)
         pen.forward(n)
-        pen.right(30)
+        a=random.randint(0,30)
+        l=random.randint(1,15)
+        pen.right(a)
+        tree(n-l)
+        pen.left(a*2)
         tree(n-10)
-        pen.left(60)
-        tree(n-10)
-        pen.right(30)
+        pen.right(a)
         pen.up()
         pen.backward(n)
         pen.down()
@@ -19,6 +22,7 @@ pen.color('sienna')
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 
+speed=30
 # 移动到起点
 pen.left(90)
 pen.up()