:param filename: File to open and get the first little chunk of.
    :param length: Number of bytes to read, default 1024.
    :returns: Starting chunk of bytes.

def get_starting_chunk(filename, length=1024):
    """
    :param filename: File to open and get the first little chunk of.
    :param length: Number of bytes to read, default 1024.
    :returns: Starting chunk of bytes.
    """
    # Ensure we open the file in binary mode
    with open(filename, 'rb') as f:
        chunk = f.read(length)
        return chunk