您可以使用argparse解析命令行参数，然后根据需要进行修改.但是，目前，argparse缺少反向操作并将这些值转换回命令行字符串的功能.但是，有一个用于精确执行此操作的程序包，称为 argunparse .例如，cmd.py

You can use argparse to parse the command-line arguments, and then modify those as desired. At the moment however, argparse lacks the functionality to work in reverse and convert those values back into a command-line string. There is however a package for doing precisely that, called argunparse. For example, the following code in cmd.py

import sys
import argparse
import argunparse

parser = argparse.ArgumentParser()
unparser = argunparse.ArgumentUnparser()
parser.add_argument('--foo')
parser.add_argument('--step', type=int)

kwargs = vars(parser.parse_args())
kwargs['step'] += 1
prefix = f'python {sys.argv[0]} '
arg_string = unparser.unparse(**kwargs)
print(prefix + arg_string)

将打印所需的命令行:

python cmd.py --foo=bar --step=1