Unable to install any package through pip

Question

For some reason I have issues installing new packages with my pip. I have an OS Sierra environment and everything was working fine before. Now either I use a virtualenv or n

Answer 1

Thanks to @Klaus D. comment (proposed to add: the -v flag in the command), I found out that the URL for:

  http://pypi.python.org/simple/requests/ 

needs to be changed to

  https://pypi.python.org/simple/requests/  (with SSL).

Executing this command worked fine:

pip install -v requests -i https://pypi.python.org/simple/

Alternatively you can change the pip.conf file as described in one of the answers here:

[global]
timeout = 60
index-url = https://pypi.python.org/simple