Python文件关键字参数?

问题描述

在命令行中，我可以将参数传递给python文件，如下所示:

In command line I am able to pass arguments to a python file as:

python script.py arg1 arg2

然后我可以按以下方式在script.py中检索arg1和arg2:

I can than retrieve arg1 and arg2 within script.py as:

import sys
arg1 = sys.argv[1]
arg2 = sys.argv[2]

但是，我想将关键字参数发送到python脚本，并将其作为字典检索:

However, I would like to send keyword arguments to a python script, and retrieve them as a dictionary:

python script.py key1=value1 key2=value2

然后我想在python中以字典形式访问关键字参数:

Then I would like to access the keyword arguments as a dictionary within python:

{'key1' : 'value1', 'key2' : 'value2'}

这可能吗?

推荐答案

我认为您正在寻找的是argparse模块 https://docs.python.org/dev/library/argparse.html .

I think what you're looking for is the argparse module https://docs.python.org/dev/library/argparse.html.

它将允许您使用命令行选项和参数解析.

It will allows you to use command line option and argument parsing.

例如假设script.py

e.g. Assume the following for script.py

import argparse

if __name__ == '__main__':
   parser = argparse.ArgumentParser()
   parser.add_argument('--arg1')
   parser.add_argument('--arg2')
   args = parser.parse_args()

   print args.arg1
   print args.arg2

   my_dict = {'arg1': args.arg1, 'arg2': args.arg2}
   print my_dict

现在，如果您尝试:

  $ python script.py --arg1 3 --arg2 4

您将看到:

3
4
{'arg1': '3', 'arg2': '4'}

作为输出.我想这就是你的追求.

as output. I think this is what you were after.

但是请阅读文档，因为这是有关如何使用argparse的 非常 的示例.例如，我传入的"3"和"4"被视为str而不是整数

But read the documentation, since this is a very watered down example of how to use argparse. For instance the '3' and '4' I passed in are viewed as str's not as integers

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