save project

my_tree.py

@@ -3,6 +3,13 @@ import random
 
 def tree(n):
     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)
@@ -17,6 +24,7 @@ def tree(n):
         pen.down()
         
 
+
 pen = turtle.Turtle()
 pen.color('sienna')
 # 画布大小