save project

diy2.py

-username = "python"
+i=3
+username = "1234567@163.com"
 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")
+    if i > 0:
+        name = input("请输入用户名:")
+        i=i-1
+        password=input('请输入密码')   
+        if name == username and password == userpassword:
+            print("登录成功!")
+        elif name !=username:
+            print('账号错误')
+            print('提示，你还有'+str(i)+'次机会')
+            continue
+        else:
+            print('密码错误')
+            print('提示，你还有'+str(i)+'次机会')
+    else:
+        print ('账号锁定')
+        exit()
 print("欢迎来到贝尔编程!")
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