save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 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")
+    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")# 如果用户输入的账号、密码正确，提示登陆成功
+        break 
+    if name!= username:
+        print("用户名错误")
+        print("提示：你还有"+str(i)+"次机会")
+        continue      
+    if password != userpassword:
+        print("密码错误")
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file