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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 number_of_bytes_to_modify(buf_len, fuzz_factor):
 """Calculate number of bytes to modify. :param buf_len: len of data buffer to fuzz. :param fuzz_factor: degree of fuzzing. :return: number of bytes to change. """

    return random.randrange(math.ceil((float(buf_len) / fuzz_factor))) + 1