<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def bytes(self, *args):

 """ return a raw value for the given arguments """

        if len(args) == 1 and isinstance(args[0], BTree.Cursor):
            cur = args[0]
        else:
            cur = self.btree.find('eq', self.makekey(*args))

        if cur:
            return cur.getval()