auto save

diy1.py

@@ -3,10 +3,22 @@ userpassword = "123456"    # 保存在服务器数据库中的用户密码（正
 name = input("请输入用户名")
 # 请用input()实现用户输入账号、密码的功能
 password = input("请输入密码")
+a=3
 while True:
-    if name == username and password == userpassword:
-        print("登陆成功")
-        break
-    print("用户名或密码错误")
-print("欢迎来到贝尔编程")    
-# 如果用户输入的账号、密码正确，提示登陆成功
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+    if a >=0:
+        if name == username and password == userpassword:
+            print("登陆成功")
+            break
+        if name != username:
+            print("用户名错误")
+            print("你还有"and a and"次机会")
+            a=a-1
+            continue
+        if password != userpassword:
+            a=a-1
+            print("密码错误")
+            print("你还有"and a and"次机会")
+    else:
+        print("已锁定")
+        exit()
+print("欢迎来到贝尔编程")
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