attempt to use NCBI Entrez to get
    BioSample ID

def searchAccession(acc):
    """
    attempt to use NCBI Entrez to get
    BioSample ID
    """
    # try genbank file
    # genome database
    out, error = entrez('genome', acc)
    for line in out.splitlines():
        line = line.decode('ascii').strip()
        if 'Assembly_Accession' in line or 'BioSample' in line:
            newAcc = line.split('>')[1].split('<')[0].split('.')[0].split(',')[0]
            if len(newAcc) > 0:
                return (True, acc, newAcc)
    # nucleotide database
    out, error = entrez('nucleotide', acc)
    for line in out.splitlines():
        line = line.decode('ascii').strip()
        if 'Assembly_Accession' in line or 'BioSample' in line:
            newAcc = line.split('>')[1].split('<')[0].split('.')[0].split(',')[0]
            if len(newAcc) > 0:
                return (True, acc, newAcc)
    # assembly database
    out, error = entrez('assembly', acc)
    for line in out.splitlines():
        line = line.decode('ascii').strip()
        if 'Assembly_Accession' in line or 'BioSample' in line:
            newAcc = line.split('>')[1].split('<')[0].split('.')[0].split(',')[0]
            if len(newAcc) > 0:
                return (True, acc, newAcc)
    for error in error.splitlines():
        error = error.decode('ascii').strip()
        if '500 Can' in error:
            return (False, acc, 'no network')
    return (False, acc, 'efetch failed')