save project

my_tree.py

 import turtle
 
-pen = turtle.Turtle()
-pen.color('sienna')
+p= turtle.Turtle()
+p.color('sienna')
 # 画布大小
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
 
 # 移动到起点
-pen.left(90)
-pen.up()
-pen.backward(150)    # 后退
-pen.down()
+p.left(90)
+p.up()
+p.backward(150)    # 后退
+p.down()
+def tree():
+    p.fd(100)
+    p.right(30)
+    tree()
+    p.backward(50)
+    tree()
+
 
 turtle.done()