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-50)
-        pen.left(60)
-        tree(n-50) 
-        pen.right(30)
-        pen.up()
-        pen.backward(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
 
 
-tree(100)
+# 移动到起点
+pen.left(90)
+pen.forward(100)
+pen.left(30)
+pen.forward(50)
+pen.up()
+pen.backward(50) 
+pen.down()
+pen.right(60)
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.left(30)
+pen.backward(100)
 turtle.done()
 turtle.done()