pip use python 3 code example
Example 1: pip install for python 2 and python3
$ curl -O https://bootstrap.pypa.io/get-pip.py
$ sudo python3.2 get-pip.py
Example 2: pip python3
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
Example 3: pip install python 3
python -m pip install <package>
#Download Selenium
python -m pip install selenium