I have generated the text file and submitted it to here, but i’m not get evaluated by your interface
Not able to submit txt file
Check from sample submission if you are submitting in the right format, if you still do not find any mistake please share your txt file link by uploading it on your google drive.
Your text file is in byte format, but online judge required utf8 encoding.
So you can do this,
generated_text = generated_text[:2000]
with open(‘answer.txt’,‘w’) as file:
file.write(generated_text)
Hope this helped you 
nope sir, still not able to upload it.
I even tried converting it in utf-8 encoding and then try to upload it but it fails
please provide me your complete ipynb notebook, I will check it asap.
Just checking it with the backend team, wait for a while, will let you know asap.
I just made little changes in your code and submitted it.
https://drive.google.com/file/d/1OzCz5kUazXeiujyw6XCys0JQfYNnnjxI/view?usp=sharing
This is the corrected file. The problem with your code was that your final text file was of len 2000 but actually in the question it means 2000 predicted characters along with 4 initials “apna” so total length must be of 2004.
And this is the reason your code was not judged by the backend.
Hope this cleared your doubt.