argparse

问题 I'm trying to learn how to analyze social media data available on the web and I'm starting with Youtube. from apiclient.errors import HttpError from outh2client.tools import argparser from apiclient.discovery import build import pandas as pd DEVELOPER_KEY = "AIzaSyB_F1mCrDydEbGUosnZES-NW-mg1CaOyjI" YOUTUBE_API_SERVICE_NAME = "youtube" YOUTUBE_API_VERSION = "v3" argparser.add_argument("--q", help="Search term", default="apple product") argparser.add_argument("--max-results", help="Max results"

问题 I'm trying to write a Python script with a lot of arguments that I'd like to break up into clear groups using the argparse module as follows: import argparse parser = argparse.ArgumentParser(description='Placeholder text', add_help=False) req = parser.add_argument_group('required arguments') req.add_argument('-m','--mode', action='store', dest='mode', help='Operation mode', choices=['single', 'multi'], required=True, metavar='') req.add_argument('-s','--snps', action='store', dest='snps',

问题 I have the following code to create a container which pretends to behave like the set of all prime numbers (actually hides a memoised brute-force prime test) import math def is_prime(n): if n == 2 or n == 3: return True if n == 1 or n % 2 == 0: return False else: return all(n % i for i in xrange(3, int(1 + math.sqrt(n)), 2)) class Primes(object): def __init__(self): self.memo = {} def __contains__(self, n): if n not in self.memo: self.memo[n] = is_prime(n) return self.memo[n] That seems to be

问题 When using an argument (optional and positional both have this problem ) with the keyword choices , the generated help output shows those choices. If that same argument also includes a metavar keyword, the list of choices is omitted from the generated output. What I had in mind, was to show the metavar in the usage line, but actually show the available choices when the 'autohelp' lists positional/optional argument details. Any simple fixes/workarounds? I have already started an argparse

问题 Hey guys, I'm having issues calling functions from argpars. This is a simplified version of my script and this works, printing whatever value I give -s or -p import argparse def main(): parser = argparse.ArgumentParser(description="Do you wish to scan for live hosts or conduct a port scan?") parser.add_argument("-s", dest='ip3octets', action='store', help='Enter the first three octets of the class C network to scan for live hosts') parser.add_argument("-p", dest='ip', action='store',help=

问题 GNU getopt, and command line tools that use it, allow options and arguments to be interleaved, known as permuting options (see http://www.gnu.org/software/libc/manual/html_node/Using-Getopt.html#Using-Getopt). Perl's Getopt::Long module also supports this (with qw(:config gnu_getopt)). argparse seems to not support (or even mention) permuting options. There are many SO questions related to arg/opt order, but none seem answer this question: Can argparse be made to permute argument order like

问题 I must be missing something obvious. The goal is to use argparse with the first parameter required, a second optional and any other remaining parameters optional. To show the issue I made two test parsers; the only difference between them is using nargs=argparse.REMAINDER in one and nargs='*' in the other. def doParser1(argsin): parser = argparse.ArgumentParser(description='Parser demo.') parser.add_argument('req1', help='first required parameter') parser.add_argument('--opt1', help='first

问题 This question is related to a question asked earlier, but might be unrelated. Question is: How to use newlines in the help text in the given (working) example below, when using subparsers? import argparse parser = argparse.ArgumentParser(formatter_class=argparse.RawTextHelpFormatter) subparsers = parser.add_subparsers() parser_start = subparsers.add_parser('stop') parser_start.add_argument("file", help = "firstline\nnext line\nlast line") print parser.parse_args() My output is as follows:

问题 I realise this is a lot like Setting default option in Python of two mutually exclusive options using the argparse module although from a different perspective (and the answers given there don't seem to help). Code block (parser is an instance of argparse.ArgumentParser): mutex_group = parser.add_mutually_exclusive_group() mutex_group.add_argument("--show", action="store_true", dest="show", default=True) mutex_group.add_argument("--insert", action="store_true", dest="insert") opts = parser