save project

my_tree.py

 import turtle
 import turtle
-import random as r
+
 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')
-turtle.setup(800,600,400,450)
+w.bgcolor('wheat')      # wheat小麦
+
+# 移动到起点
 pen.left(90)
 pen.left(90)
 pen.up()
 pen.up()
-pen.backward(300)
+pen.backward(150)    # 后退
 pen.down()
 pen.down()
-a=0
-def tree(n):
-        if n>=50:
-            angle=r.randint(15,45)
-            pen.speed(10)
-                # 后退
-            a=r.randint(n-10,n+10)
-            pen.forward(a)
-            pen.right(angle)
-            tree(n-10)
-            pen.left(angle*2)
-            tree(n-10)
-            pen.right(angle)
-            pen.up()
-            pen.backward(a)
-            pen.down()
-      # wheat小麦
-
-# 移动到起点
+pen.forward(100)
+pen.right(30)
+pen.forward(50)
+pen.backward(50)
+pen.left(60)
+pen.forward(50)
 
 
-tree(100)
 turtle.done()
 turtle.done()