def fasta_header(exp, N):
    """Generates random headers for the fasta file
    
    Parameters
    ----------
    exp : str
        name of experiment (no spaces)
    N : int
        number of headers to be generated
    
    Returns
    -------
    headers : list
        names for each sequence (arbritrary)
    """
    
    headers =  [''.join(['>',exp,'_random_sequence_',str(i)]) for i,
                x in enumerate(list(range(int(N))))]
    
    return headers