auto save

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~')
+import random
+
+# 私钥
+key = "abcdefgh使用python实现简单的位移替换加密，制作密码机关真是太好玩了哈哈哈！"
+# 要加密语句
+message = "诺依，周末一起去看动漫展吧！"
+# 最终加密后的语句
+key_message = ""
+# 干扰字符
+noise = "port:@#$%^&"
+for i in message:
+    str1 = i
+    str2 = random.choice(key)
+    str3 = random.choice(key)
+    text = str1+str2+str3
+    key_message = key_message + text
+
+list_message = list(key_message)
+
+index = random.randint(0, len(key_message))
+list_message.insert(index, noise)
+
+result_message = "".join(list_message)
+print(result_message)
+
+
+#解密
+list_message = list(result_message)
+for i in range(len(noise)):
+    list_message.pop(index)
+key_message = "".join(list_message)
+print(key_message)
+
+res = key_message[0]
+i = 0
+# for i in range(len(key_message)):
+while i < len(key_message):
+    i+=3
+    if i <len(key_message):
+        res+=key_message[i]
+
+print(res)