auto save

my_Tetris.py

 import turtle
 import turtle
-
+import random
 
 
 
 
 def tree(n):
 def tree(n):
-    if n>=50:
+    if n>=0:
         pen.fd(n)
         pen.fd(n)
-        pen.rt(30)
-        tree(n-50)
-        pen.lt(60)
-        tree(n-50)
-        pen.rt(30)
+        angle=random.randint(0,30)
+        length=random.randint(1,15)
+        pen.rt(angle)
+        tree(n-10)
+        pen.lt(2*angle)
+        tree(n-10)
+        pen.rt(angle)
         pen.up()
         pen.up()
         pen.bk(n)
         pen.bk(n)
         pen.down()
         pen.down()
@@ -20,5 +22,5 @@ w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 w.bgcolor('wheat')      # wheat小麦
 # 移动到起点
 # 移动到起点
 pen.lt(90)
 pen.lt(90)
-tree(150)
+tree(100)
 turtle.done()
 turtle.done()
\ No newline at end of file