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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 take(self, stream, num):
 """Read the given number of bytes from the stream. :param stream: stream to read from :param num: number of bytes to read :raises ReadError: if the stream did not yield the exact number of bytes expected """

        s = stream.read(num)
        slen = len(s)
        if slen != num:
            raise ReadError(
                "Expected %d bytes but got %d bytes." % (num, slen)
            )
        return s