Fabfile, promp with a list

fab.py

    i = 0
    for dump in dumps:
        print cyan('%(i)s => %(dump)s' % {'i':i, 'dump':dump})
        i += 1

    def validateDumpNumber(arg):
        if i < int(arg):
            raise Exception('You have to choose an int among [0-%(i)s], not %(arg)s' % {'i':i, 'arg':arg})
        return arg

    dumpChoosen = prompt(cyan('{Dump} Choose a dump to restore'), validate=validateDumpNumber, default=0)