save project

my_tree.py

@@ -13,6 +13,24 @@ pen.backward(150)    # 后退
 pen.down()
 pen.down()
 def tree(n):
 def tree(n):
     if n>=0:
     if n>=0:
+        if n<=12:
+            color=['snow','lightcoral']
+            color1=random.choice(color)
+            pen.color(color1)
+            pen.pensize(n/3)
+        else:
+            pen.color('sienna')
+            pen.pensize(n/10)
+        pen.forward(n)
+        angle=random.random()
+        pen.right(30*angle)
+        lenght=1.5*random.random()
+        tree(n-10*lenght)
+        pen.right(30*angle)
+        pen.up()
+        pen.backward(n)
+        pen.down()
+
         pen.forward(n)
         pen.forward(n)
         pen.right(30)
         pen.right(30)
         tree(n-10)
         tree(n-10)