python argh/argparse: How can I pass a list as a command-line argument?
With argparse, you just use type=int
import argparseparser = argparse.ArgumentParser()parser.add_argument('-a', '--arg', nargs='+', type=int)print parser.parse_args()Example output:
$ python test.py -a 1 2 3Namespace(arg=[1, 2, 3])Edit: I'm not familiar with argh, but it seems to be just a wrapper around argparse and this worked for me:
import argh@argh.arg('-a', '--arg', nargs='+', type=int)def main(args): print argsparser = argh.ArghParser()parser.add_commands([main])parser.dispatch()Example output:
$ python test.py main -a 1 2 3Namespace(arg=[1, 2, 3], function=<function main at 0x.......>)
I order to have access to each parameter value, the following code may be helpful.
import argparseparser = argparse.ArgumentParser()parser.add_argument('-a', '--arg', nargs='+', type=int)args = vars(parser.parse_args())print "first parameter:" + str(args["arg"][0])print "second parameter:" + str(args["arg"][1])print "third parameter:" + str(args["arg"][2])