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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 parse_bytes(self, i):
 """Parse byte."""


        value = int(self.get_byte(i), 16)
        single = self.get_single_stack()
        if self.span_stack:
            text = self.convert_case(chr(value), self.span_stack[-1])
            value = ord(self.convert_case(text, single)) if single is not None else ord(text)
        elif single:
            value = ord(self.convert_case(chr(value), single))
        if self.use_format and value in _CURLY_BRACKETS_ORD:
            self.handle_format(chr(value), i)
        else:
            self.result.append('\\%03o' % value)