pip tamper should be install with admin rights because some other dependencies during installation though error, and already some users have reported similar issues.
I guess it is a pretty common issue, but the right way to go with this is using virtualenvs.
On one hand, it's not so popular/known. On the other hand, most pip packages on Github state you should do "pip install ", not "sudo pip install...". So I get the feeling we will be doing something wrong by having the docs suggest you should use sudo...
pip tamper should be install with admin rights because some other dependencies during installation though error, and already some users have reported similar issues.