save project

my_tree.py

 import turtle
 import turtle
 import random
 import random
 def tree(n):
 def tree(n):
-    if n >= 50:
+    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)
         pen.forward(n)
-        pen.right(30)
-        tree(n-10)
-        pen.left(60)
-        tree(n-10)
-        pen.right(30)
+        angle = randomr.randint()
+        pen.right(30*angle)
+        length = 1.5*random.randint()
+        tree(n-10*length)       
+        pen.left(60*angle)
+        tree(n-10*length)
+        tree.right(30*angle)
         pen.up()
         pen.up()
         pen.backward(n)
         pen.backward(n)
         pen.down()
         pen.down()
             
             
         
         
+
 pen = turtle.Turtle()
 pen = turtle.Turtle()
 pen.color('sienna')
 pen.color('sienna')
 # 画布大小
 # 画布大小