argparse 调试

Question

为了简化起见，这里是调试失败的代码。有两个问题：

1. 我似乎无法创建允许在调试或非调试模式下传递参数的运行配置。

2. 此代码在调试模式下总是失败？

   导入argparse
   解析器 = argparse.ArgumentParser()
   parser.add_argument('文件名', type=argparse.FileType('r'))
   args = parser.parse_args()
   print("文件名：", args.文件名)
   

以下是运行的示例配置：

        {
            "name": "Python: filetest.py",
            "type": "python",
            "request": "launch",
            "program": 
            "${workspaceFolder}/filetest.py",
            "args": [
                "./samples/blja2.wav"
            ],
            "console": "integratedTerminal"
        }

Answer 1

import argparse


def argparse_sample():
    parser = argparse.ArgumentParser()
    parser.add_argument('sample_args', type=argparse.FileType('r'))
    args = parser.parse_args()
    print("File Content: ", args.sample_args.readlines())


if __name__ == '__main__':
    argparse_sample()

所以没有调试模式：
输出：

$ python main.py sample_args.txt
Filename:  ['        {\n', '            "name": "Python: filetest.py",\n', '            "type": "python",\n', '
   "request": "launch",\n', '            "program": \n', '            "${workspaceFolder}/filetest.py",\n', '
 "args": [\n', '                "./samples/blja2.wav"\n', '            ],\n', '            "console": "integratedTermina
l"\n', '        }']

在 PyCharm 中使用调试模式：
PyCharm 调试设置

输出：

C:\projects\StackOverFlow\venv\Scripts\python.exe C:/projects/StackOverFlow/main.py sample_args.txt
Filename:  ['        {\n', '            "name": "Python: filetest.py",\n', '            "type": "python",\n', '            "request": "launch",\n', '            "program": \n', '            "${workspaceFolder}/filetest.py",\n', '            "args": [\n', '                "./samples/blja2.wav"\n', '            ],\n', '            "console": "integratedTerminal"\n', '        }']

Process finished with exit code 0

Visual Studio Code 调试器设置 (launch.json)：

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {   "args": ["sample_args.txt"],
            "name": "Python: Current File",
            "type": "python",
            "request": "launch",
            "program": "${file}",
            "console": "integratedTerminal"
        }
    ]
}

输出：

PS C:\projects\StackOverFlow>  c:; cd 'c:\projects\StackOverFlow'; & 'C:\Python38\python.exe' 'c:\Users\alist\.vscode\extensions\ms-python.python-2021.8.1159798656\pythonFiles\lib\python\debugpy\launcher' '49710' '--' 'c:\projects\StackOverFlow\main.py' 'sample_args.txt'
Filename:  ['        {\n', '            "name": "Python: filetest.py",\n', '            "type": "python",\n', '            "request": "launch",\n', '            "program": \n', '            "${workspaceFolder}/filetest.py",\n', '            "args": [\n', '                "./samples/blja2.wav"\n', '            ],\n', '            "console": "integratedTerminal"\n', '        }']