2. 使用argparse模块,不添加任何参数 #coding=utf-8import argparseif__name__ =="__main__": print"arg test"parser=argparse.ArgumentParser() parser.parse_args() 执行脚本 C:\PycharmProjects\p3\src\pyproject1>python argTest.py arg test C:\PycharmProjects\p3\src\pyproject1>python argTest.py -...
myprogram:error:the following arguments are required:i <action> """action""">>>fromargparseimportArgumentParser>>>parser=ArgumentParser(prog='myprogram')>>>parser.add_argument("-a",action="store")#action="store"存储参数的值,默认操作>>>parser.parse_args(["-a","alter"])Namespace(a='alter...
required:可选参数是否为必选(仅针对可选参数)。 help:参数的帮助信息,当指定为argparse.SUPPRESS 时表示不显示该参数的帮助信息 metavar:在 usage 说明中的参数名称,对于必选参数默认就是参数名称,对于可选参数默认是全大写的参数名称; dest:解析后的参数名称,默认情况下,对于可选参数选取最长的名称,中划线转换为...
import argparseparser = argparse.ArgumentParser()parser.add_argument( '-n', '--name', dest='rname', required=True, help='increase output name' )args = parser.parse_args()name = args.rnameprint('Hello', name)先在控制台执行命令 python test.py -h，执行结果：usage: test.py [-...
在Python中,argparse模块用于解析命令行参数。以下是argparse中常用的参数:1. 位置参数(Positional arguments):不带前缀的参数,通常是必选参数。2. 可...
optional arguments: -h, --help show this help message and exit -n N Please enter a number -a A Please enter operation C:\Users\Administrator\Desktop\python3\day3> 输入错误的字符查看,比如-n是int,我这里输入字符串 C:\Users\Administrator\Desktop\python3\day3>python ArgparsePractice.py -n sd...
前方Bug预警:xxx .py: error: the following arguments are required: -i/--image 在学习opencv+python时,遇到下面这个Bug,查阅资料后终解决,现在将解决办法分享给大家。 Bug图 程序部分源码 ap = argparse.ArgumentParser() ap.add_argument("-i", "--image", required=True,help="path to the input image...
) ... usage: timer.py [-h] time timer.py: error: the following arguments are required: time Traceback (most recent call last): ... subprocess.CalledProcessError: Command '['python', 'timer.py']' returned non-zero exit status 2....
This is how we defined the two arguments in our Python script. main.py parser.add_argument('-c', '--count') parser.add_argument('-v', '--verbose', action='store_true') # Conclusion To solve the Python argparse "unrecognized arguments" error, make sure: You haven't passed the sys...
The first step when using argparse is to create a parser object and tell it what arguments to expect. The parser can then be used to process the command line arguments when your program runs. The parser class is ArgumentParser. The constructor takes several arguments to set up the description...