处理argparse冲突 [英] Handling argparse conflicts

问题描述

如果我导入Python 模块已经使用 argparse ，但是，我也想在脚本中使用 argparse ...我应该如何去做?

If I import a Python module that is already using argparse, however, I would like to use argparse in my script as well ...how should I go about doing this?

使用以下代码并使用-t标志调用脚本时，我收到无法识别的参数错误:

I'm receiving a unrecognized arguments error when using the following code and invoking the script with a -t flag:

代码段:

#!/usr/bin/env python

....
import conflicting_module
import argparse
...

#################################
# Step 0: Configure settings... #
#################################
parser = argparse.ArgumentParser(description='Process command line options.')
parser.add_argument('--test', '-t')

错误:

 unrecognized arguments: -t foobar

推荐答案

您需要使用

if __name__ == '__main__':
    ...

针对它运行初始化代码，例如在导入时解析参数.参见 if __name__ == "__main__":做什么?.

against it running initialization code such as argument parsing on import. See What does if __name__ == "__main__": do?.

所以，在您的conflicting_module做

if __name__ == '__main__':
    parser = argparse.ArgumentParser(description='Process command line options in conflicting_module.py.')
    parser.add_argument('--conflicting', '-c')
    ...

不仅仅是在全局范围内创建解析器.

instead of just creating the parser globally.

如果conflicting_module中的解析是应用程序配置的必需部分，请考虑使用

If the parsing in conflicting_module is a mandatory part of application configuration, consider using

args, rest = parser.parse_known_args()

在主模块中，然后将rest传递给conflicting_module，在其中将None或rest传递给parse_args:

in your main module and passing rest to conflicting_module, where you'd pass either None or rest to parse_args:

args = parser.parse_args(rest)

那还是有点不好的风格，实际上conflicting_module中的类和函数将理想地从主模块接收解析后的配置参数，该参数将负责解析它们.

That is still a bit bad style and actually the classes and functions in conflicting_module would ideally receive parsed configuration arguments from your main module, which would be responsible for parsing them.

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