save project

diy2.py

 username = "python"
 username = "python"
 userpassword = "123456"
 userpassword = "123456"
+name = input("请输入用户名:")
+password = input("请输入密码:")
 while True:
 while True:
-    name = input("请输入用户名:")
-    password = input("请输入密码:")
-    if name == username and password == userpassword:
-        print("登录成功!")
-        break
-    if name!=username:
-        print("用户名错误!请重新输入")
-        continue
-    if password!=userpassword:
+    while name!=username:
+       print("用户名错误!请重新输入")
+       name = input("请输入用户名:")
+    while password == userpassword:
         print("用密码错误!请重新输入")
         print("用密码错误!请重新输入")
+        password = input("请输入密码:")
+    if name==username and password ==userpassword:
+        print("登录成功!")
+        break        
 print("欢迎来到贝尔编程!")
 print("欢迎来到贝尔编程!")
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