auto save

1.py

+import turtle
+pen=turtle.Pen()
+pen.left(90)
+pen.forward(100)
+pen.right(30)
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.down()
+pen.left(60)
+pen.forward(50)
+pen.up()
+pen.backward(50)
+pen.right(30)
+pen.backward(100)
+pen.down()
+turtle.done()
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diy.py

-# 持家小能手 (利用自动更新成绩程序的逻辑完成这个新项目)
-# 如果输入的水果价钱比字典中的低，则替换掉，反之则不更新
-cost= {'苹果':5.2,'山竹':12.9,'香蕉':2.4,'荔枝':15,'葡萄':9.3,'桂圆':8,'蓝莓':10,'李子':8}
-k=input('请输入水果名称：')
-v=input('请输入水果价钱：')
-# ?补充条件判断:
-    if # ?:
-        # ?更新价钱
-        print(k+'降价了，现价'+v+'元')
-    else:
-        print(k+'涨价了，我们不买')
-else:
-    cost[k] = float(v)
-    print(k+'的价钱'+v+'元已上传~')
+def a(n):
+    if n==10:
+        return 1
+    nam=(a(n+1)+1)*2
+    return nam
+b=a(1)
+print(b)
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