save project

diy2.py

+i=3
 username = "python"    
 userpassword = "123456"  
 while True:
-    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!")
-    print("用户名和密码错误!请重新输入")
-print("欢迎来到贝尔编程!")
\ No newline at end of file
+    if i>0:
+        name=input('请输入账号')
+        password=input('请输入密码')
+        i-=1
+        if name==username and password==userpassword:
+            print('登入成功')
+            break
+        elif name!=username:
+            print("用户名错误！请重新输入")
+            print("温馨提示,你还有"+str(i)+"机会")
+            continue
+        elif password!=username:
+            print("密码错误！请重新输入")
+            print("温馨提示:你还有"+str(i)+"机会")
+    else:
+        print("这么简单的密码都记不住，真是猪脑子！")
+        exit()
+print('欢迎来到贝尔编程')