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diy1.py

-# 期末考试结束了，悟空在教务系统查到了自己的几门必修课分数，他想通过python计算自己的平均分。
-# 于是写了下面的代码，可是总是得不到结果，请帮纠正bug并跑通程序。
-
-scores = {'语文':89, '数学':95, '英语':80}
-
-def get_average(scores):
-    sum_score = 0
-
-    for subject, score in scores.items():
-
-        sum_score += score
-        print('现在的总分是%d'%sum_score)
-    ave_score = sum_score/len(scores)
-    print('平均分是%d'%ave_score)
-
-get_average(scores)
+i = 3
+username = "python"
+userpassword = "123456" 
+while True:
+    if i>0:
+        name = input("请输入用户名：")
+        password = input("请输入密码：")
+        i -= 1
+        if name == username and password == userpassword:
+            print("登陆成功！")
+            break
+        if name != username:
+            print("用户名错误，请重新输入！")
+            print("温馨提示：您还有"+str(i)+"次登陆机会")
+            continue
+        if password != userpassword:
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+            print("密码输入有误，请重新输入！")
+            print("温馨提示，您还有"+str(i)+"次登陆机会")
+    else:
+        print("你的账户已被锁定，请一小时以后再来！")
+        exit()
+print("欢迎来到贝尔编程！")
+
+
+    
+
+        
+                       
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diy2.py

+username='Rao Muze'
+userpassword='20120625'
+name=input("请输入用户名：")
+password=input('请输入密码：')
+if name==username and password==userpassword:
+    print("登录成功")
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