upgrade pip3 in fedora

 how can we use pip3 after we install python27(then we have pip already) and python35
refer to :http://blog.csdn.net/ouening/article/details/53358726

wget https://bootstrap.pypa.io/ez_setup.py

#安装easy_install-3.5
python3.5 ez_setup.py

#安装完成后/usr/local/bin/目录下出现easy_install-3.5

#安装pip3.5
easy_install-3.5 pip

#安装完成后/usr/local/bin/目录下出现pip3.5

#升级pip3.5版本
pip3.5 install --upgrade pip


>pip install gensim