I tried upgrade pip3 with this command:
sudo pip3 install --upgrade pip
but unfortunately it doesn\'t work anymore and shows this me
It seems like you don't use virtualenv
and your pythons/paths are probably messed up.
I faced with similar problem with python-2.7 and -3.4 on Ubuntu 14.04. I tried
sudo python -m pip install --upgrade --force-reinstall pip
for 2.7 and it helped. Then I reinstalled pip
for python-3.4 via easy_install3
.