无法安装Python软件包[SSL:TLSV1_ALERT_PROTOCOL_VERSION] [英] Not able to install Python packages [SSL: TLSV1_ALERT_PROTOCOL_VERSION]

问题描述

我正在尝试使用pip安装Python库，但遇到SSL错误:

I am trying to install a Python library using pip, getting an SSL error:

~/projects/base  pre-master±  pip install xdict

Collecting xdict
  Could not fetch URL https://pypi.python.org/simple/xdict/: There was a problem confirming the ssl certificate: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) - skipping
  Could not find a version that satisfies the requirement xdict (from versions: )
No matching distribution found for xdict

pip版本:pip 9.0.1

pip version: pip 9.0.1

如何解决此错误?

推荐答案

升级点如下:

curl https://bootstrap.pypa.io/get-pip.py | python

注意:如果不在虚拟环境中，则可能需要使用上面的sudo python.

Note: You may need to use sudo python above if not in a virtual environment.

(请注意，使用pip即pip install --upgrade pip升级pip也不会正确升级.这只是一个鸡与蛋的问题.pip除非使用TLS> = 1.2，否则将无法工作.)

(Note that upgrading pip using pip i.e pip install --upgrade pip will also not upgrade it correctly. It's just a chicken-and-egg issue. pip won't work unless using TLS >= 1.2.)

如此详细答案中所述，这是由于最近对pip的TLS弃用. Python.org网站具有停止对TLS版本1.0和1.1的支持.

As mentioned in this detailed answer, this is due to the recent TLS deprecation for pip. Python.org sites have stopped support for TLS versions 1.0 and 1.1.

在Python状态页上:

From the Python status page:

已完成-滚动式电源不足已完成，并且TLSv1.0和 TLSv1.1已被禁用.世界标准时间4月11日15:37

Completed - The rolling brownouts are finished, and TLSv1.0 and TLSv1.1 have been disabled. Apr 11, 15:37 UTC

对于PyCharm(virtualenv)用户:

1. 使用shell运行虚拟环境. (将"./venv/bin/activate"替换为您自己的路径)

1. Run virtual environment with shell. (replace "./venv/bin/activate" to your own path)

source ./venv/bin/activate

运行升级

Run upgrade

curl https://bootstrap.pypa.io/get-pip.py | python

重新启动您的PyCharm实例，并在 Preference 中检查您的Python解释器.

Restart your PyCharm instance, and check your Python interpreter in Preference.

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