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python - python3.8 virtualenv pip没有升级

问题描述

在运行以下命令

pip install --upgrade pip

即使我无法安装任何其他软件包，它也会显示以下错误，因为它说先升级 pip。

WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/pip/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/pip/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/pip/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/pip/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/pip/
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping
Requirement already up-to-date: pip in ./environments/mjshare_env/lib/python3.8/site-packages (19.3.1)
WARNING: You are using pip version 19.3.1; however, version 20.0.2 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

如果我跑

pip list

我有以下包裹

Package    Version
---------- -------
pip        19.3.1 
setuptools 42.0.2 
wheel      0.33.6

标签： pythonsslpip

解决方案

问题不在于 pip 的版本，而在于 ssl。您安装的 python 版本没有 ssl 模块，如果您在没有安装 libssl-dev 头文件的情况下编译 python，就会出现这种情况。（或者你下载的版本就是这样制作的）。

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