save project

0.py

+username="python"
+userpassword="123456"
+while True:
+    name=input("输入账号：")
+    password=input("输入密码：")
+    if name==username and userpassword==password:
+        print("登陆成功")
+        break
+    if name != username:
+        print("name")
+        continue
+    if password != userpassword:
+        print("password")
+    print("用户名和密码错误!请重新输入")
+print("欢迎来到贝尔编程!")     
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