add_argument的类型参数设置为list_of_strings,因此当调用parse_args时,-str-list的字符串值被转换为字符串列表。 importargparse# 为字符串列表定义自定义参数类型deflist_of_strings(arg):returnarg.split(',')# 创建ArgumentParser对象parser = argparse.A
args - List of strings to parse. The default is taken from sys.argv. namespace - An object to take the attributes. The default is a new empty Namespace object. Option value syntax The parse_args() method supports several ways of specifying the value of an option (if it takes one). ...
args - List of strings to parse. The default is taken from sys.argv. namespace - An object to take the attributes. The default is a new empty Namespace object. Option value syntax The parse_args() method supports several ways of specifying the value of an option (if it takes one). ...
args - List of strings to parse. The default is taken from sys.argv. namespace - An object to take the attributes. The default is a new empty Namespace object. 15.4.4.1. Option value syntax The parse_args() method supports several ways of specifying the value of an option (if it tak...
The integers attribute will be a list of one or more integers, and the accumulate attribute will be either the sum() function, if --sum was specified at the command line, or the max() function if it was not. 解析参数 ArgumentParser 通过parse_args() 方法解析参数。它将检查命令行,把每个...
name or flags - Either a name or a list of option strings, e.g. foo or -f, --foo. action - The basic type of action to be taken when this argument is encountered at the command line. nargs - The number of command-line arguments that should be consumed. ...
Either a name or a list of option strings, e.g. foo or -f, --foo. 用于标识参数的参数,必须有,通常以-或–来表示 1. 2. from argparse import ArgumentParser parse = ArgumentParser.add_argument('--s','-s') 1. 2. action action - The basic type of action to be taken when this argu...
N (整数) N个命令行参数被保存在一个list中 >>> parser = argparse.ArgumentParser() >>> parser.add_argument('--foo', nargs=2) >>> parser.add_argument('bar', nargs=1) >>> parser.parse_args('c --foo a b'.split()) Namespace(bar=['c'], foo=['a', 'b']) 1 2 3 4 5 1...
help='Remove the contents of the directory, too')print parser.parse_args() 1. 2. 3. 输出的帮助信息显示作为“命令”的命名子解析器能够在命令行中作为位置参数进行指定。 $ python argparse_subparsers.py -h usage: argparse_subparsers.py [-h] {list, create, delete} ... ...
argparse.REMAINDER 原封不动的记录参数到list中,通常用于将这些参数传递到其它的命令行工具。 [, const] # action/nargs部分要求的常值 1、当action="store_const"或者"append_const"时需要设置 2、当选项为(-f/--foo),nargs='?',同时未提供具体参数时,取用该值。