def parse_accession(data_dict):
    """Retrieve Accession from PhagesDB.

    :param data_dict: Dictionary of data retrieved from PhagesDB.
    :type data_dict: dict
    :returns: Accession of the phage.
    :rtype: str
    """
    try:
        accession = data_dict['genbank_accession']
    except:
        accession = ''
    return accession
