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diy.py

@@ -12,6 +12,6 @@ today_menu={'前菜':{'熏鲢鱼':20,'生蚝':20,'面包':10},
 
 for k,v in today_menu.items():  
     print('今日' + k + '有：')
-    for i in v:               
-        print(i,end=' ')      #依次告诉客人今天的各类菜有哪些选择
+    for i,j in v.items():               
+        print(i,j,end=' ')      #依次告诉客人今天的各类菜有哪些选择
     print()
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diy2.py

+import turtle #导入turtle模块
+turtle.shape('turtle') #设置画笔形状为海龟
+turtle.color('red') #设置画笔颜色为红色
+turtle.setheading(90)
+def up():
+    turtle.fd(10) #画笔移动10
+
+def down():
+    turtle.bk(10)  #画笔后退10
+
+def left():
+    turtle.left(5) #画笔左转90度
+
+def right():
+    turtle.right(5) #画笔右转90度
+
+turtle.onkeypress(up,'Up')
+turtle.onkeypress(down,'Down')
+turtle.onkeypress(left,'Left')
+turtle.onkeypress(right,'Right')
+turtle.listen()
+turtle.mainloop() #循环监听   等同于turtle.done()
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