save project

123.py

+username="123"
+userpassword="12"
+while True:
+    name=input("输入账号：")
+    password=input("输入密码：")
+    if username==name and userpassword==password:
+        print("登录成功！")
+        break    
+    if username!=name:
+        print("账户名错误，请重新输入！")
+        continue
+    if userpassword!=password:
+        print("密码错误，请重新输入！")
+        
+    
+