How do I use optparse to just split the command-line arguments into options and positional args?
test.py -a SOMETHING 1 2 3

>> print opt
>> ['-a', 'SOMETHING']

>> print args
>> ['1', '2', '3']

import optparse

parser = optparse.OptionParser()
parser.add_option("-a", action="store", type="string", dest="a")

(opt, arg) = parser.parse_args()
print "Opt:", opt
print "Arg:", arg

Opt: {'a': 'SOMETHING'}
Arg: ['1', '2', '3']

o = list()
for k in vars(opt):
    o.append(k)
    o.append(getattr(opt, k))
print "List Opt:", o

List Opt: ['a', 'SOMETHING']