save project

diy2.py

+username = "p"
+userpassword = "1"
+i=5
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        password = input("请输入密码:")
+        i-=1
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if name != username:
+            print(str(i))
+            print("用户名和密码错误!请重新输入")
+        elif password != userpassword:
+            print("gui")
+            exit()
+print("欢迎来到贝尔编程!")
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