Python 库 argparse 方法 parse_args() 中的错误

Question

我正在编写我的集成测试代码，然后我有一个父

BaseTestClass

类要扩展到儿童类。父基类应该从资源

yaml

文件中读取动态属性，以便于更改环境等。要使用的测试框架是

pytest

.

一旦我执行下面的代码，就会在我解析参数的行中触发错误：

args = parser.parse_args()

。我找出错误的线索已经结束了

test_base.py

import yaml
import pytest
import argparse


class BaseTestClass:
    @classmethod
    def configure(cls):
        print('Configure')
        # Read env from CLI args
        parser = argparse.ArgumentParser()
        parser.add_argument('--env',
                            choices=['local', 'dev', 'qa', 'prod'],
                            help='The execution environment',
                            default='local')
        args = parser.parse_args() # Code is breaking here.
        env = args.env
        with open(f"resources/config-{env}.yaml", 'r') as file:
            properties = yaml.safe_load(file)
            cls.config = properties

    @pytest.fixture(autouse=True)
    def configure_parent(self):
        self.configure()

错误日志：

usage: _jb_pytest_runner.py [-h] [--env {local,dev,qa,prod}]
_jb_pytest_runner.py: error: unrecognized arguments: --json=report.json /Users/agstcadini/Projects/quinta/quinta-app/python/quinta-backend/tests/integration

test setup failed
self = <test_api.TestApi object at 0x1088bd640>

    @pytest.fixture(autouse=True)
    def configure_parent(self):
>       self.configure()

test_base.py:24: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
test_base.py:16: in configure
    args = parser.parse_args()
/usr/local/Cellar/[email protected]/3.9.10/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py:1827: in parse_args
    self.error(msg % ' '.join(argv))
/usr/local/Cellar/[email protected]/3.9.10/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py:2581: in error
    self.exit(2, _('%(prog)s: error: %(message)s\n') % args)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = ArgumentParser(prog='_jb_pytest_runner.py', usage=None, description=None, formatter_class=<class 'argparse.HelpFormatter'>, conflict_handler='error', add_help=True)
status = 2
message = '_jb_pytest_runner.py: error: unrecognized arguments: --json=report.json /Users/agstcadini/Projects/quinta/quinta-app/python/quinta-backend/tests/integration\n'

    def exit(self, status=0, message=None):
        if message:
            self._print_message(message, _sys.stderr)
>       _sys.exit(status)
E       SystemExit: 2

/usr/local/Cellar/[email protected]/3.9.10/Frameworks/Python.framework/Versions/3.9/lib/python3.9/argparse.py:2568: SystemExit

文件系统

% tree -v -L 2
.
├── __pycache__
│   ├── test_api.cpython-39-pytest-7.3.1.pyc
│   └── test_base.cpython-39-pytest-7.3.1.pyc
├── report.json
├── resources
│   ├── config-dev.yaml
│   └── config-local.yaml
├── test_api.py
└── test_base.py

config-local.yaml

endpoint:
  host: localhost
  port: 8081