Signzy Systems Developer Python Developer interview questions

I was given a assignment for first round for web scraping then after one week i got a call that i was selected for second round then some technical questions in second round on telephone then i got one more assignment as a third round and got rejected.. when i asked the interviewer what was the reason he told me that u dint did much UI (if you will mention obviously a candidate will do but that was a backend assignment sir FYI) and i have to save some score on logout which i did and have also mentioned in the doc string of my function and hez telling that is not done.. while hiring a developer you should go through the code first and then say that is done or not .. I dont know how they become senior