求助：Eclipse PyDev运行模块时无法找到自定义包

项目结构：my_project > src > my_package > modules.py，已将my_project > src添加到PYTHONPATH，运行测试时一切正常，但运行代码时出现以下错误：

Traceback (most recent call last):
  File "/Users/gturek/dev/git/moniqua_maps/src/moniqua_maps/moniqua_maps.py", line 11, in <module>
    from moniqua_maps.Resources import Resources
  File "/Users/gturek/dev/git/moniqua_maps/src/moniqua_maps/moniqua_maps.py", line 11, in <module>
    from moniqua_maps.Resources import Resources
ModuleNotFoundError: No module named 'moniqua_maps.Resources'; 'moniqua_maps' is not a package

按照建议修改Eclipse设置，改用python -m启动后，错误信息略有变化，但核心问题依然是模块找不到：

traceback (most recent call last):
  File "/Users/gturek/miniforge3/envs/mmaps/lib/python3.10/runpy.py", line 187, in _run_module_as_main
    mod_name, mod_spec, code = _get_module_details(mod_name, _Error)
  File "/Users/gturek/miniforge3/envs/mmaps/lib/python3.10/runpy.py", line 110, in _get_module_details
    __import__(pkg_name)
  File "/Users/gturek/dev/git/moniqua_maps/src/moniqua_maps/moniqua_maps.py", line 11, in <module>
    from moniqua_maps.Resources import Resources
ModuleNotFoundError: No module named 'moniqua_maps.Resources'; 'moniqua_maps' is not a package

内容的提问来源于stack exchange，提问作者Gabriella Turek