Will Trump be gracious in defeat and attend Bidens inauguration in January ?

That scenario is highly unlikely.

This could have all been avoided if little Donnie Trump had got his lights punched out in the schoolyard 60 years ago.  He would have learned then, as most of us did, that defeat happens and you get over it.  You might even become friends with the person who gave you the lesson.  

But Donnie never learned to accept defeat and move on.  So no.  He won't be gracious and he won't attend the inauguration.  

Judging by the amount of Chinese interference. Only the Chinese will attend.

No he won’t attend it. He isn’t a real man. 

He admitted that he won't last night during a press conference