Not able to install Python packages [SSL: TLSV1_ALERT_PROTOCOL_VERSION]

Question

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

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

Collecting xdict
  Co         


        

Answer 1

Check your TLS version:

python2 -c "import urllib2,json; print(json.loads(urllib2.urlopen('https://www.howsmyssl.com/a/check').read())['tls_version'])"

If your TLS version is less than 1.2 you have to upgrade it since the PyPI repository is on a brownout period of deprecating early TLS.

Source - Time To Upgrade Your Python: TLS v1.2 Will Soon Be Mandatory

You can upgrade the TLS version using the following command:

sudo apt-get update && sudo apt-get install openssl libssl-dev

This should fix your problem. Good luck!

EDIT: You can download packages using your own private python package repository regardless of TLS version. Private Python Package Repository