save project

my_tree.py

 import turtle
 import turtle
 
 
+def tree(n):
+    if n>=50:
+        pen.down()
+        pen.forward(n)
+        pen.right(30)
+        tree(n-10)
+        pen.left(60)
+        tree(n-10)
+        pen.left(30)
+        pen.backward(n)
+        pen.penup()
+
 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
+turtle.done
\ No newline at end of file
-pen.left(90)
-pen.up()
-pen.backward(150)    # 后退
-pen.down()
-pen.forward(100)
-pen.right(30)
-pen.forward(100)
-pen.forward(-100)
-pen.left(60)
-pen.forward(100)
-pen.forward(-100)
-pen.right(30)
-pen.forward(-100)