save project

my_tree.py

@@ -2,7 +2,8 @@ import turtle
 
 pen = turtle.Turtle()
 pen.color('sienna')
-# 画布大小
+
+pen.pensize(8)# 画布大小
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 
@@ -11,5 +12,13 @@ pen.left(90)
 pen.up()
 pen.backward(150)    # 后退
 pen.down()
-
+pen.forward(200)
+pen.right(30)
+pen.forward(100)
+pen.backward(100)
+pen.left(60)
+pen.forward(100)
+pen.backward(100)
+pen.right(30)
+pen.backward(200)
 turtle.done()