save project

my_tree.py

 import turtle
 import turtle
-import random
 
 
 pen = turtle.Turtle()
 pen = turtle.Turtle()
 pen.color('sienna')
 pen.color('sienna')
@@ -13,26 +12,16 @@ pen.up()
 pen.backward(150)    # 后退
 pen.backward(150)    # 后退
 pen.down()
 pen.down()
 def shu(n):
 def shu(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)
+    if n >= 50:
         pen.forward(n)
         pen.forward(n)
-        sed=random.randint(0,30)
-        ser=random.randint(1,15)
-        pen.right(sed)
-        shu(n-ser)
-        pen.left(2*sed)
-        shu(n-ser)
-        pen.right(sed)
+        pen.right(30)
+        shu(n-10)
+        pen.left(60)
+        shu(n-10)
+        pen.right(30)
         pen.up()
         pen.up()
         pen.backward(n)
         pen.backward(n)
         pen.speed(0)
         pen.speed(0)
         pen.down()
         pen.down()
-shu(80)
+shu(100)
 turtle.done()
 turtle.done()