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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def set_burn_in_from_config(self, cp):
 """Sets the burn in class from the given config file. If no burn-in section exists in the file, then this just set the burn-in class to None. """

        try:
            bit = self.burn_in_class.from_config(cp, self)
        except ConfigParser.Error:
            bit = None
        self.set_burn_in(bit)