PyCharm运行/调试Tox报错：找不到packaging模块，终端运行正常

问题现象 #

• 在PyCharm终端执行tox命令时，所有测试可正常启动
• 使用PyCharm运行/调试按钮（Ctrl+Shift+R）执行测试时，抛出模块找不到错误

错误信息 #

from packaging.requirements import InvalidRequirement, Requirement
ModuleNotFoundError: No module named 'packaging'

Process finished with exit code 1

Empty suite

当前环境状态 #

• PyCharm已将默认Python设为项目解释器
• 本地Python环境中packaging模块已安装：

bart automated-tests % pip install packaging     
Requirement already satisfied: packaging in /Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/site-packages (24.1)

tox.ini配置内容 #

[tox]
envlist = tests
skipsdist = True

[testenv]
basepython = python3
commands =
   pytest {posargs}


[pytest]

addopts =
    --basetemp="{envtmpdir}"
    --confcutdir=..
    --sensitive-url=NONE
    --driver Chrome
    --capability browserName chrome
    --alluredir=reports
    --base-url="https://proper_url"

疑问 #

已查阅相关资料未找到解决方案，为何PyCharm运行/调试按钮无法正常执行测试？

内容的提问来源于stack exchange，提问作者Bart77