def get_qword_at_rva(self, rva):
        """Return the quad-word value at the given RVA.

        Returns None if the value can't be read, i.e. the RVA can't be mapped
        to a file offset.
        """

        try:
            return self.get_qword_from_data(self.get_data(rva)[:8], 0)
        except PEFormatError:
            return None
Return the quad-word value at the given RVA.

        Returns None if the value can't be read, i.e. the RVA can't be mapped
        to a file offset.
        
pefile.py