save project

my_tree.py

 import turtle
 def tree(n):
-    if n >= 0:
-        pen.forward(n)
-        pen.right(30)
-        tree(n-10)
-        pen.left(60)
-        tree(n-10)
-        pen.right(30)
-        pen.up()
-        pen.backwardI(n)
-        pen.down()
-        
+    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.random()
+pen.right(30*angle)
+length = 1.5*random.random()
+tree(n-10*length)
+pen.left(60*angle)
+tree(n-10*lengen)
+pen.right(30*angle)
+pen.up()
+pen.backward(n)
+pen.down()
 # 创建画笔 pen
 pen=t.Pen()
 # 设置画笔颜色为'sienna'