save project

diy2.py

+#保存用户数据
+username= "python"
+userpassword = "123456"
+#判断
+while True:
+    name = input("你账号是？")
+    if name == username:
+        password = input("你密码是？") 
+        if password == userpassword:
+            print("登陆成功")
+            break
+        if password != userpassword:
+            print("密码错误")   
+    if name != username:
+        print("账户错误")
+        continue
+print("欢迎")
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