save project

diy2.py

+i=3
+username = "python"
+userpassword = "123456"
+while True:
+    if i>0:
+        name = input("请输入用户名:")
+        i=i-1
+        if name != username:
+            print("用户名不存在，请重新输入")
+            print("温馨提示：你还有"+str(i)+"次登录机会")            
+                        
+            continue
+        password = input("请输入密码:")
+        if name == username and password == userpassword:
+            print("登录成功!")
+            break
+        if password != userpassword:
+            print("密码错误，请重新输入")
+            print("温馨提示：你还有"+str(i)+"次登录机会")
+    else:
+        print("账户已锁定")
+        exit()        
+print("欢迎来到贝尔编程!")
\ No newline at end of file