save project

my_tree.py

 import turtle
 import random
+
 pen = turtle.Turtle()
 pen.color('sienna')
 # 画布大小
@@ -14,20 +15,27 @@ pen.down()
 
 
 def tree(n):
-    if n >=50:
-        pen.size(n/10)
+    if n >=0:
+        if n<=12:
+            color_list = ['snow','lightcoral']
+            color=random.choice(color_list)
+            pen.color(color)
+            pen.pensize(n / 3)
+        else:
+                pen.color('sienna')
+                pen.pensize(n / 10)
         pen.forward(n)
-        angle=random.randint(0,30)
-        length=random.randint(1,15)
-        pen.right(30)
-        tree(n-10)
-        pen.left(60)
-        tree(n-10)
-        pen.right(30)
+        angle =random.random()
+        pen.right(30*angle)
+        length=1.5*random.random()
+        tree(n-10*length)
+        pen.left(60*angle)
+        tree(n-10*length)
+        pen.right(30*angle)
         pen.up()
         pen.backward(n)
         pen.down()
-        pen.speed(500)
+        pen.speed(90000)
 
-tree(100)
+tree(60)
 turtle.done()