python - 如何使用 VSCode 调试器调试 Python console_script 命令行应用程序？

Question

我有一个 Python 包 package_name它提供了一个命令行应用程序command-line-app-name如console_script :setup.py :

setup(
    ...
    entry_points={"console_scripts": ["command-line-app-name=package_name.cli:main"]},
    ...
)

virtualenv 位于 <project>/.venv并通过 pipenv 管理. pipenv托管 venvs 应该支持 VSCode 调试集成。我创建了一个调试器配置 launch.json将 Python 路径设置为 venv ( pythonPath ) 的文件:

{
    // 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": [
        {
            "name": "Python: command-line-app-name",
            "type": "python",
            "request": "launch",
            "stopOnEntry": false,
            "program": "command-line-app-name",
            "linux": {
                "pythonPath": "${workspaceFolder}/.venv/bin/python",
                "args": ["-r", "/home/florian/gitlab/package_name/data/Test_MRM.d"]
            },
            "windows": {
                "pythonPath": "${workspaceFolder}/.venv/Scripts/python.exe",
                "args": ["-r", "D:\\MassHunter\\Data\\demo_0000.d"],
            },
            "console": "integratedTerminal"
        }
    ]
}

Windows 和 Linux 特定的 venv python 可执行文件和命令行参数不应产生影响。如果我运行调试器，我会得到: FileNotFoundError: [Errno 2] No such file or directory: '/home/florian/gitlab/package-name/command-line-app-name' .似乎我以某种方式误解了文档。我试图寻求帮助 w.r.t. vscode-python以及 debugpy没有成功。如何调试控制台脚本命令行应用程序(而不是包模块)？

Answer 1

console_scripts无法开箱即用地调试。解决方案是直接调用入口点函数( "program": "${workspaceRoot}/package_name/cli.py", )。这需要添加 if __name__ == '__main__':相应模块中的成语(此处:cli.py)。在我的例子中，使用的命令行参数解析器是 click .然而，其他命令行解析器库的伪代码应该非常相似。package_name/cli.py :

@click.command()
@click.option(...)
def main(<args>, <kwargs>):
    ...


if __name__ == '__main__':
    main()  # pylint: disable=no-value-for-parameter

.vscode/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": [
        {
            "name": "Python: command-line-app-name",
            "type": "python",
            "request": "launch",
            "stopOnEntry": false,
            "program": "${workspaceRoot}/package_name/cli.py",
            "linux": {
                "pythonPath": "${workspaceFolder}/.venv/bin/python",
                "args": ["-r", "/home/florian/gitlab/package_name/data/Test_MRM.d"]
            },
            "windows": {
                "pythonPath": "${workspaceFolder}/.venv/Scripts/python.exe",
                "args": ["-r", "D:\\MassHunter\\Data\\demo_0000.d"],
            },
            "console": "integratedTerminal"
        }
    ]
}

注意 : 用于管理 venv 的工具有所作为。如果使用 pipenv 管理 venv，此解决方案确实有效。 .如果使用 poetry 管理 venv，则该解决方案不起作用.