auto save

my_tree2.py

@@ -2,20 +2,30 @@ import turtle
 import random
 
 pen = turtle.Turtle()
-pen.color('sienna')
+pen.color('sienna') #赭色
 # 画布大小
 w = turtle.Screen()
 w.bgcolor('wheat')      # wheat小麦
-pen.speed(0)
+
+#写字
+pen.penup()
+pen.goto(-400,100)
+
+pen.write('宝\n剑\n锋\n从\n磨\n砺\n出',font=('宋体',20,'normal'))
+pen.goto(0,0)
+
+
 # 移动到起点
 pen.left(90)
 pen.up()
 pen.backward(150)    # 后退
 pen.down()
+pen.speed(0)
 
-def tree(n):  # 画树枝
-    if n>=0:
-        if n<= 12 :
+#画一个二叉树(二,分型树)
+def tree(n):
+    if n >= 0:
+        if n <= 12:
             color_list = ['snow','lightcoral']
             color = random.choice(color_list)
             pen.color(color)
@@ -23,18 +33,16 @@ def tree(n):  # 画树枝
         else:
             pen.color('sienna')
             pen.pensize(n/10)
-        pen.pensize(n/10)
-        pen.forward(n)
-        angle = random.randint(0,30)
-        length = random.randint(1,15)
+        pen.forward(n)  #前进
+        angle = random.randint(0,30)#随机生成角度
+        len = random.randint(1,15) #随机生成树枝的长度
         pen.right(angle)
-        tree(n-length)
+        tree(n-len)
         pen.left(2*angle)
-        tree(n-length)
+        tree(n-len)
         pen.right(angle)
-        pen.up()
+        pen.penup()     #抬笔
         pen.backward(n)
-        pen.down()
-
-tree(60)
+        pen.pendown()   #落笔
+tree(80)
 turtle.done()
\ No newline at end of file