Python多版本环境冲突致requests导入失败及pip报错求助

环境背景 #

• 开发环境：PyCharm中使用Python 3.6
• 系统已安装两个Python版本：

  Controller$ python2 -V
  Python 2.7.17
  Controller$ python3 -V
  Python 3.10.5
  

问题现象 #

• 脚本在本地控制台运行正常，但部署到/var/www/html目录后，触发Traceback报错，核心为requests模块导入失败：

  Traceback (most recent call last): File "/home/doozie/Pycharm Projects/Python Learning/JA GAME/log2.py", line 5, in import requests
  File "/usr/lib/python3/dist-packages/requests/init.py", line 43, in import urllib3 File "/usr/lib/python3/dist-packages/urllib3/init.py", line 8, in from .connectionpool import ( File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 29, in from .connection import ( File "/usr/lib/python3/dist-packages/urllib3/connection.py", line 40, in from .util.ssl_ import ( File "/usr/lib/python3/dist-packages/urllib3/util/init.py", line 3, in from .connection import is_connection_dropped File "/usr/lib/python3/dist-packages/urllib3/util/connection.py", line 3, in from .wait import wait_for_read File "/usr/lib/python3/dist-packages/urllib3/util/wait.py", line 1, in from .selectors import ( File "/usr/lib/python3/dist-packages/urllib3/util/selectors.py", line 14, in from collections.abc import namedtuple, MappingImportError: cannot import name 'namedtuple'

• 注释import requests语句后，脚本可正常运行，初步判断为Python版本环境配置冲突。

已尝试操作及异常反馈 #

• 执行pip升级、pip install requests等命令时，要么提示依赖已满足，要么抛出如下错误：

  Controller$ sudo pip3 install requests
  [sudo] password for doozie:         
  Traceback (most recent call last):
    File "/usr/bin/pip3", line 9, in <module>
      from pip import main
    File "/usr/lib/python3/dist-packages/pip/__init__.py", line 22, in <module>
      from pip._vendor.requests.packages.urllib3.exceptions import DependencyWarning
    File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 73, in <module>
      vendored("pkg_resources")
    File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 33, in vendored
      __import__(modulename, globals(), locals(), level=0)
    File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/__init__.py", line 77, in <module>
    File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/_vendor/packaging/requirements.py", line 9, in <module>
    File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
    File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
    File "<frozen importlib._bootstrap>", line 672, in _load_unlocked
    File "<frozen importlib._bootstrap>", line 632, in _load_backward_compatible
    File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/extern/__init__.py", line 43, in load_module
    File "/usr/share/python-wheels/pkg_resources-0.0.0-py2.py3-none-any.whl/pkg_resources/_vendor/pyparsing.py", line 943, in <module>
  AttributeError: module 'collections' has no attribute 'MutableMapping
  

• 因担心误操作破坏系统环境，寻求安全有效的解决方案。

内容的提问来源于stack exchange，提问作者BedSon