human
Solve the following python programming problem given the following code:
def unpickle(self, fgraph) : 
    def get_destroyers_of(r) : 
        (droot, impact, root_destroyer) = self.refresh_droot_impact () 
        try : 
            return [root_destroyer [droot [r]]] 
except Exception : 
            return [] 
fgraph.destroyers = fgraph 

    
    

    Fix the buggy line: fgraph.destroyers = fgraph
assistant
#Here is Python program to fix the buggy line: fgraph.

fgraph.destroyers = def get_destroyers_of(