save project

diy2.py

+i=3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
 while True:
 while True:
+    if i>0:
         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!")
-    elif name !=username：
-    #    break
-    #if name!=username:
-    #    print("用户名不存在")
-    #    continue    
-   # if password != userpassword:
-        print("诺伊是烧饼")
-print("欢迎来到贝尔编程!")
+            print("登录") 
+            break
+        if name != username:
+            print("用户名错误")
+            continue
+        if password != userpassword:
+            print("密码错误") 
+    else:
+        print("去自首吧")
\ No newline at end of file
+        exit()
+print("欢迎")