可以看到hi参数是一个positional arguments(位置参数),也就是说是必须的,不像前面有短横线的optional arguments(可选参数) choices选项限定 除了上述类型限定和可以自定义类型之外,还可以限定在一些自定义的范围内 #c.py parser=argparse.ArgumentParser(description='自定义选项') parser.add_argument('sel',type=int,...
defparse_command_line_arguments():# Import the required modulesimportargparse# Instantiate the parsercommand_line_arguments_parser = argparse.ArgumentParser()#TODO:ADD YOUR ARGUMENTS HERE# Add positional argumentscommand_line_arguments_parser.add_argument("my_positional_int_arg",type=int,help="This is...
optional arguments:-h, --help show this help message and exit 3. 使用argparse模块,添加参数, #coding=utf-8importargparseif__name__=="__main__":print"arg test"parser=argparse.ArgumentParser() parser.add_argument("reportname", help="set the reportname by this argument") args=parser.parse_...
/usr/bin/python3#-*- coding: UTF-8 -*-importargparseif__name__=="__main__": parser= argparse.ArgumentParser(description='Test command line arguments') parser.add_argument('-n','--num', type=int, nargs='+', metavar='', required=True, help='a string of numbers') args=parser.par...
在Python 编程中,我们经常需要处理运行参数(command line arguments),比如从命令行传递一些信息给我们的程序。Python 提供了非常方便的模块来帮助我们处理这些参数,其中argparse是最为常用的库之一。本文将探讨如何使用argparse来处理多行的运行参数,并附带示例代码。
import argparse from pathlib import Path # head command # working with positional arguments parser = argparse.ArgumentParser() parser.add_argument('f', type=str, help='file name') parser.add_argument('n', type=int, help='show n lines from the top') ...
If you need more advanced parsing, you can useargparse. You can define arguments like (-o, -s). The example below parses parameters: importargparse parser = argparse.ArgumentParser() parser.add_argument('-o','--open-file', help='Description', required=False) ...
Python argparse module is the preferred way to parse command line arguments. It provides a lot of option such as positional arguments, default value for arguments, help message, specifying data type of argument etc. At the very simplest form, we can use it like below. ...
Optional command-line arguments without a valueWe can also make optional command-line arguments that don't accept a value.In this version of add.py we're accepting an optional --verbose argument:import argparse parser = argparse.ArgumentParser() parser.add_argument('x', type=float) parser.add...
# import the necessary packages import argparse # construct the argument parse and parse the arguments ap = argparse.ArgumentParser() ap.add_argument("-n", "--name", required=True, help="name of the user") args = vars(ap.parse_args()) # display a friendly message to the user print(...