save project

diy1.py

-i = 3
 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
-while tree:
-    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")
-    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
-    elif name != username;
-        print("用户名不存在，请重新输入")
-    else;
-        print("密码输入有误，请重新输入")
-        exit()
-print("欢迎来到贝尔编程!")
+    if name != username:
+        print("用户名不存在，请重新输入!")
+        continue
+    if password != userpassword:
+        print("密码输入有误，请重新输入!")
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