callback=optparse_listvalue_callback)
parser.add_option('-p', '--pis', dest='pis', metavar='<PIs>', help='Set/replace Principal Investigators/Project Managers',
default='', type="str", action='callback', callback=optparse_listvalue_callback)
callback=optparse_listvalue_callback)
parser.add_option('-p', '--pis', dest='pis', metavar='<PIs>', help='Set/replace Principal Investigators/Project Managers',
default='', type="str", action='callback', callback=optparse_listvalue_callback)