save project

diy2.py

+username="python"
+userpassword="123456"
+i=3
+while True:
+    name=input("请输入用户名")
+    password=input("请输入密码")
+    i-=1
+    if name==username and password==userpassword:
+        print("登陆成功")
+        break
+    if name!=username:
+        print("用户名错误")
+        costinue
+    if password!=userpassword:
+        print("密码错误") 
+if i>=1:
+    print("去死吧")
\ No newline at end of file