save project

diy2.py

+i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
+    if i<=3:
         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:")
+        i-=1
         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("用户名输入错误")
             print("用户名输入错误")
+            continue
         if  password!=userpassword
         if  password!=userpassword
             print("密码输入错误")
             print("密码输入错误")
         print("用户名和密码错误!请重新输入")
         print("用户名和密码错误!请重新输入")
+    else:
+         
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
\ No newline at end of file