【VSCode】【Python】Python Language Server

2021-06-03 13:04:15 阅读：333 来源： 互联网

标签：virtualenv 20.0 13 importlib Language Python python VSCode

一. 问题

最近在 VSCode 时候Python2 环境，发现 Python Language Server 一直弹警告; 但是 Python3 环境下，无此问题;

类似于如下的方式，其实正常运行无此问题，但就是报错;

unresolved import 'unittest'

二. 环境

2.1 darwin

Mac OS X:

版本: 1.56.2 (Universal)
提交: 054a9295330880ed74ceaedda236253b4f39a335
日期: 2021-05-12T17:44:30.902Z
Electron: 12.0.4
Chrome: 89.0.4389.114
Node.js: 14.16.0
V8: 8.9.255.24-electron.0
OS: Darwin x64 19.4.0

# Python 2
Python: 2.7.17
pip: 19.3.1
virtualenv: 20.4.6

# Python 3
Python: 3.8.5
pip: 21.0.1
virtualenv: 20.4.6

2.2 win32

Windows:

版本: 1.56.2 (user setup)
提交: 054a9295330880ed74ceaedda236253b4f39a335
日期: 2021-05-12T17:13:13.157Z
Electron: 12.0.4
Chrome: 89.0.4389.114
Node.js: 14.16.0
V8: 8.9.255.24-electron.0
OS: Windows_NT x64 10.0.18363

# Python 2
Python: 2.7.16
pip: 18.1
virtualenv: 20.0.13

# Python 3
Python: 3.8.2
pip: 19.2.3
virtualenv: 20.4.7

三. 描述

看了类似问题，

1. https://github.com/microsoft/python-language-server/issues/1986

2. https://github.com/pypa/virtualenv/issues/355

发现有人说可能是 virtualenv 的问题，那我就试着装一下旧版本 virtualenv 看看问题会不会出现;

目前，Windows 上，Python2 和 Python3 无此问题，Mac 上只有Python 2 有问题，但是 Python 3 无此问题;

四. 验证

先卸载 virtualenv 新版本

$ pip2 uninstall virtualenv

然后安装旧版本 virtualenv

$ pip2 install virtualenv==20.0.13
DEPRECATION: Python 2.7 will reach the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 won't be maintained after that date. A future version of pip will drop support for Python 2.7. More details about Python 2 support in pip, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support
Collecting virtualenv==20.0.13
  Downloading https://files.pythonhosted.org/packages/84/3a/9d656ec2535fa5f6680d55ef93a05f890bd1b2ad6f2bf97b34a679abf365/virtualenv-20.0.13-py2.py3-none-any.whl (4.6MB)
     |████████████████████████████████| 4.6MB 61kB/s 
Requirement already satisfied: six<2,>=1.9.0 in /usr/local/lib/python2.7/site-packages (from virtualenv==20.0.13) (1.16.0)
Requirement already satisfied: filelock<4,>=3.0.0 in /usr/local/lib/python2.7/site-packages (from virtualenv==20.0.13) (3.0.12)
Collecting importlib-metadata<2,>=0.12; python_version < "3.8"
  Downloading https://files.pythonhosted.org/packages/8e/58/cdea07eb51fc2b906db0968a94700866fc46249bdc75cac23f9d13168929/importlib_metadata-1.7.0-py2.py3-none-any.whl
Requirement already satisfied: distlib<1,>=0.3.0 in /usr/local/lib/python2.7/site-packages (from virtualenv==20.0.13) (0.3.1)
Requirement already satisfied: appdirs<2,>=1.4.3 in /usr/local/lib/python2.7/site-packages (from virtualenv==20.0.13) (1.4.4)
Collecting importlib-resources<2,>=1.0; python_version < "3.7"
  Downloading https://files.pythonhosted.org/packages/7f/2d/88f166bcaadc09d9fdbf1c336ad118e01b7fe1155e15675e125be2ff1899/importlib_resources-1.5.0-py2.py3-none-any.whl
Requirement already satisfied: contextlib2<1,>=0.6.0; python_version < "3.3" in /usr/local/lib/python2.7/site-packages (from virtualenv==20.0.13) (0.6.0.post1)
Requirement already satisfied: pathlib2<3,>=2.3.3; python_version < "3.4" and sys_platform != "win32" in /usr/local/lib/python2.7/site-packages (from virtualenv==20.0.13) (2.3.5)
Requirement already satisfied: zipp>=0.5 in /usr/local/lib/python2.7/site-packages (from importlib-metadata<2,>=0.12; python_version < "3.8"->virtualenv==20.0.13) (1.2.0)
Requirement already satisfied: configparser>=3.5; python_version < "3" in /usr/local/lib/python2.7/site-packages (from importlib-metadata<2,>=0.12; python_version < "3.8"->virtualenv==20.0.13) (4.0.2)
Requirement already satisfied: singledispatch; python_version < "3.4" in /usr/local/lib/python2.7/site-packages (from importlib-resources<2,>=1.0; python_version < "3.7"->virtualenv==20.0.13) (3.6.1)
Requirement already satisfied: typing; python_version < "3.5" in /usr/local/lib/python2.7/site-packages (from importlib-resources<2,>=1.0; python_version < "3.7"->virtualenv==20.0.13) (3.10.0.0)
Requirement already satisfied: scandir; python_version < "3.5" in /usr/local/lib/python2.7/site-packages (from pathlib2<3,>=2.3.3; python_version < "3.4" and sys_platform != "win32"->virtualenv==20.0.13) (1.10.0)
Installing collected packages: importlib-metadata, importlib-resources, virtualenv
  Found existing installation: importlib-metadata 2.1.1
    Uninstalling importlib-metadata-2.1.1:
      Successfully uninstalled importlib-metadata-2.1.1
  Found existing installation: importlib-resources 3.3.1
    Uninstalling importlib-resources-3.3.1:
      Successfully uninstalled importlib-resources-3.3.1
Successfully installed importlib-metadata-1.7.0 importlib-resources-1.5.0 virtualenv-20.0.13

此时使用 virtualenv 工具重新创建 venv2 ，用 VSCode 打开问题依旧;

此问题尚未解决，后续看 VSCode 支持 Python2 力度如何，然后解决了再回来更新;

五. 参考

(完)

标签：virtualenv,20.0,13,importlib,Language,Python,python,VSCode
来源： https://blog.csdn.net/DovSnier/article/details/117514603

本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；
2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；
3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；
4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；
5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。

ICode9