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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 _value_length(self, value, t):
 """Given an integer or list of them, convert it to an array of bytes."""


        if isinstance(value, int):
            fmt = '<%s' % (type_codes[t])
            output = struct.pack(fmt, value)
            return len(output)
        elif isinstance(value, str):
            return len(value) + 1  # Account for final 0

        len_accum = 0
        for x in value:
            len_accum += self._value_length(x, t)

        return len_accum