save project

账号登录.py

+username = "python"
+username = "python"
+userpassword = "123456"
+while True:
+    name = input("输入账号: ")
+    password = input("输入密码: ")
+    if name == username and password == userpassword:
+        print("登录成功！")
+        break
+    print("输入错误，重新输入") 
+print("欢迎来到贝尔编程")       
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