Python argparse条件参数 [英] Python argparse conditional arguments

问题描述

我正在创建一个需要使用argparse的条件参数的程序.我想在我的代码中生成新的参数，具体取决于是否输入了先前的参数.这是一个我希望代码看起来如何的基本示例

I am creating a program that requires conditional arguments using argparse. I would like to generate new arguments in my code depending on if a previous argument has been entered or not. Here is a basic example of how I would like my code to look

import argparse
parser = argparse.ArgumentParser()

parser.add_argument("-bowtie",action = "store_true",help="use to run bowtie")
args = parser.parse_args()

if args.bowtie:
    parser.add_argument( add some new argument here )
    args = parser.parse_args()

推荐答案

最近我做了很多与此非常相似的事情.查看次级解析器:

I've been doing a lot of stuff recently that's really similar to this. Look into subparsers:

parser = argparser.ArgumentParser
subparsers = parser.add_subparsers('-bowtie')
subparser = subparsers.add_parser()
subparser.add_argument('new argument')

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