save project

my_tree.py

 import turtle
-import random
 
 pen = turtle.Turtle()
-
+pen.color('sienna')
 # 画布大小
 w = turtle.Screen()
-w.bgcolor('wheat')
-color_list=['snow','lightpink','blueviolet']      # wheat小麦
+w.bgcolor('wheat')      # wheat小麦
 pen.left(90)
 pen.up()
 pen.backward(150)    # 后退
 pen.down()
 # 移动到起点
 def tree(n):
-    if n<=12:
+    if n>50:
     
-        index=random.randint(0,len(color_list)-1)
-        pen.pencolor(color_list[index])
-        pen.pensize(n/3)
-    else:
-        pen.color('sienna')
-    if n>5:
-        pen.pensize(n/10)
-        length=random.randint(1,12)
-        angle=random.randint(10,30)
         pen.forward(n)
-        pen.right(angle)
-        tree(n-length)
+        pen.right(30)
+        tree(n-10)
         
-        pen.left(angle*2)
-        tree(n-length)
+        pen.left(60)
+        tree(n-10)
         pen.up()
         
-        pen.right(angle)
+        pen.right(30)
         pen.backward(n)
         pen.down()
-tree(60)
+tree(100)
 turtle.done()