save project

diy1.py

+i = 3
 username = "python"    # 保存在服务器数据库中的用户账号（正确的账号）
 username = "python"    # 保存在服务器数据库中的用户账号（正确的账号）
 userpassword = "123456"    
 userpassword = "123456"    
 while True:
 while True:
-    name = input("用户名：")
-    password = input("密码：")
-    if name == username and password == userpassword:
-        print("登陆成功")
-        break
-    if name != username:
-        print("用户名错误")
-        continue
-    if password != userpassword:
-        print("密码错误")
+    if i>0:
+        name = input("用户名：")
+        password = input("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")
+            continue
+        if password != userpassword:
+            print("密码错误")
+    else:
+        print("4tw4t")
+        exit()
 
 
 print("欢迎来到贝尔编程")
 print("欢迎来到贝尔编程")