VS Code中Unittest测试发现失败，模块导入报错求助

项目结构 #

/project
  /app
  /app2
  /tests
  /utils
    /services.py

问题现象 #

项目已运行多年，此前测试正常，更新Python插件或VS Code后出现以下异常：

• app模块可正常调用utils.services
• 终端执行python3 -m unittest tests或python3 -m unittest discover -s tests时，测试能正常运行
• VS Code中无法加载测试列表，Python输出报错如下：

2023-11-20 17:25:33.469 [info] Discover tests for workspace name: order - uri: /Users/ralfeus/Projects/order/tests/__init__.py
2023-11-20 17:25:33.469 [info] Running discovery for unittest using the new test adapter.
2023-11-20 17:25:33.470 [info] Discovering unittest tests with arguments: /Users/ralfeus/.vscode/extensions/ms-python.python-2023.20.0/pythonFiles/unittestadapter/discovery.py,--udiscovery,-v,-s,tests,-p,*test*.py

2023-11-20 17:25:33.470 [info] > ./bin/python ~/.vscode/extensions/ms-python.python-2023.20.0/pythonFiles/unittestadapter/discovery.py --udiscovery -v -s tests -p *test*.py
2023-11-20 17:25:33.471 [info] cwd: .
2023-11-20 17:25:33.738 [info] Test server connected to a client.
2023-11-20 17:25:33.739 [error] Unittest test discovery error 
 Failed to import test module: addresses.test_address_api
Traceback (most recent call last):
  File "/opt/homebrew/Cellar/python@3.11/3.11.4_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/unittest/loader.py", line 407, in _find_test_path
    module = self._get_module_from_name(name)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/python@3.11/3.11.4_1/Frameworks/Python.framework/Versions/3.11/lib/python3.11/unittest/loader.py", line 350, in _get_module_from_name
    __import__(name)
  File "/Users/ralfeus/Projects/order/tests/addresses/test_address_api.py", line 3, in <module>
    from app.users.models.role import Role
  File "/Users/ralfeus/Projects/order/app/__init__.py", line 18, in <module>
    from utils.services import get_celery, init_celery
ModuleNotFoundError: No module named 'utils.services'; 'utils' is not a package

已尝试的解决方法 #

• 调整VS Code中的Unittest配置参数
• 修改sys.path路径，尝试将项目根目录加入Python路径
• 修改app/__init__.py中的导入语句，将from utils.services import get_celery, init_celery改为from .utils.services import get_celery, init_celery，但出现新错误：

No module named 'app.utils'

猜测 #

怀疑VS Code执行测试发现时，将/app目录而非项目根目录作为Python的根路径，但无法确认具体原因，寻求可行的解决办法。

内容的提问来源于stack exchange，提问作者Ralfeus