save project

my_Tetris.py

 import turtle
 import turtle
 
 
+
+
+def tree(n):
+    if n>=50:
+        pen.fd(n)
+        pen.rt(30)
+        tree(n-50)
+        pen.lt(60)
+        tree(n-50)
+        pen.rt(30)
+        pen.up()
+        pen.bk(n)
+        pen.down()
 pen = turtle.Turtle()
 pen = turtle.Turtle()
 pen.color('sienna')
 pen.color('sienna')
 # 画布大小
 # 画布大小
 w = turtle.Screen()
 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.left(90)
 pen.left(90)
 pen.up()
 pen.up()
@@ -13,10 +25,14 @@ pen.backward(150)    # 后退
 pen.down()
 pen.down()
 pen.forward(100)
 pen.forward(100)
 pen.right(30)
 pen.right(30)
+pen.down()
 pen.forward(50)
 pen.forward(50)
+pen.up()
 pen.backward(50)
 pen.backward(50)
 pen.left(60)
 pen.left(60)
+pen.down()
 pen.forward(50)
 pen.forward(50)
+pen.up()
 pen.backward(50)
 pen.backward(50)
 pen.right(30)
 pen.right(30)
 turtle.done()
 turtle.done()
\ No newline at end of file