argparse

I am using Google's Python API to pull down auditing information, but I can't get the parent group arguments for argparse (which appear to be required for API access) and my own arguments (e.g. passing in a date) to work together. Code: import pprint import sys import re import httplib2 import json import collections import argparse from oauth2client import client from apiclient import sample_tools from apiclient import discovery from oauth2client.client import AccessTokenRefreshError from oauth2client.client import OAuth2WebServerFlow from oauth2client.file import Storage from oauth2client

I have quite a big program which has a CLI interaction based on argparse , with several sub parsers. The list of supported choices for the subparsers arguments are determined based on DB queries, parsing different xml files, making different calculations etc, so it is quite IO intensive and time consuming. The problem is that argparse seems to fetch choices for all sub parser when I run the script, which adds a considerable and annoying startup delay. Is there a way to make argparse only fetch and validate choices for the currently used sub parser? One solution could be to move all the

I'm using argparse to take input and pass it to a function that takes as arguments two variables and **kwargs . Here's my function: import requests import sys import argparse def location_by_coordinate(LAT, LNG, **kwargs): if not kwargs: coordinate_url = "https://api.instagram.com/v1/locations/search?lat=%s&lng=%s&access_token=%s" % (LAT, LNG, current_token) r = requests.get(coordinate_url).text else: coordinate_url = "https://api.instagram.com/v1/locations/search?lat=%s&lng=%s&access_token=%s" % (LAT, LNG, current_token) for key, value in kwargs.iteritems(): if 'DISTANCE' in kwargs: distance

Currently --resize flag that I created is boolean, and means that all my objects will be resized: parser.add_argument("--resize", action="store_true", help="Do dictionary resize") # ... # if resize flag is true I'm re-sizing all objects if args.resize: for object in my_obects: object.do_resize() Is there a way implement argparse argument that if passed as boolean flag ( --resize ) will return true, but if passed with value ( --resize 10 ), will contain value. Example: python ./my_script.py --resize # Will contain True that means, resize all the objects python ./my_script.py --resize <index> #

I'm using argparse with optional parameter, but I want to avoid having something like this : script.py -a 1 -b -a 2 Here we have twice the optional parameter 'a', and only the second parameter is returned. I want either to get both values or get an error message. How should I define the argument ? [Edit] This is the code: import argparse parser = argparse.ArgumentParser() parser.add_argument('-a', dest='alpha', action='store', nargs='?') parser.add_argument('-b', dest='beta', action='store', nargs='?') params, undefParams = self.parser.parse_known_args() hpaulj append action will collect the

Trying to parse optional positional arguments I ran into following issue: Example: import argparse parser = argparse.ArgumentParser() parser.add_argument('infile') parser.add_argument('outfile', nargs='?') parser.add_argument('-v', action='store_true') print(parser.parse_args()) Output: $ ./x.py -v in out Namespace(infile='in', outfile='out', v=True) $ ./x.py in out -v Namespace(infile='in', outfile='out', v=True) $ ./x.py in -v out usage: x.py [-h] [-v] infile [outfile] x.py: error: unrecognized arguments: out Why is the third program invocation not accepted? Is this a restriction of argparse

I have a dictionary which maps human readable values to three different Python specific values. How can the argparse Python module use this dictionary to get me the specific values while the user can choice between the keys. Currently I have this: def parse(a): values = { "on": True, "off": False, "switch": None } parser = argparse.ArgumentParser() parser.add_argument("-v", "--value", choices=values, default=None) args = parser.parse_args(a) print("{}: {}".format(type(args.value), args.value)) >>> parse(['-v', 'on']) <type 'str'>: on >>> parse(['-v', 'off']) <type 'str'>: off >>> parse(['-v',

I am trying to write a command line interface (for the first time) and after reading up about argparse , optparse and getopt I chose argparse because of several recommendations here on SO and elswhere in the net. Adapting a little of the advice of Mr. van Rossum I hooked up my first command line interface like this: def main(argv=None): if argv is None: argv = sys.argv desc = u'some description' parser = argparse.ArgumentParser(description=desc) parser.add_argument('-s', '--search', help='Search for someone.') parser.add_argument('-c', '--do_something_else', help='Do something else.') args =

Going off of Greg Haskin's answer in this question , I tried to make a unittest to check that argparse is giving the appropriate error when I pass it some args that are not present in the choices . However, unittest generates a false positive using the try/except statement below. In addition, when I make a test using just a with assertRaises statement, argparse forces the system exit and the program does not execute any more tests. I would like to be able to have a test for this, but maybe it's redundant given that argparse exits upon error? #!/usr/bin/env python3 import argparse import