save project

diy2.py

 username = "python"
 userpassword = "123456"
-while True:
+i=0
+while i<10:
     name = input("请输入用户名:")
     password = input("请输入密码:")
+    # if...elif...else
     if name == username and password == userpassword:
         print("登录成功!")
         break
+    elif name!=username and password!=userpassword:
+        print("用户名和密码错误!请重新输入")
+        continue
     elif name!=username:
         print("用户名错误!请重新输入")
-    elif password!=userpassword:
-        print("密码错误!请重新输入")
+        continue
+    # elif password!=userpassword:
     else:
-        print("用户名和密码错误!请重新输入")
+        print("密码错误!请重新输入")
+        continue
+    i=i+1
 print("欢迎来到贝尔编程!")
\ No newline at end of file