auto save

diy2.py

+i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-while True:
+if i>0:
+    while True:
         name = input("请输入用户名:")
         name = input("请输入用户名:")
         password = input("请输入密码:")
         password = input("请输入密码:")
+        1-=i
         if name == username and password == userpassword:
         if name == username and password == userpassword:
             print("登录成功!")
             print("登录成功!")
             break
             break
         if name!=username:
         if name!=username:
             print("用户名错误!请重新输入")
             print("用户名错误!请重新输入")
+            continue
         if password!=userpassword:
         if password!=userpassword:
             print("密码错误！请重新输入")
             print("密码错误！请重新输入")
-print("欢迎来到贝尔编程!")
+    print("欢迎来到贝尔编程!")
\ No newline at end of file