pip_upgrade.py

#! /usr/bin/python

import pip
import sys
from subprocess import call


def pip_upgrade():
    if sys.version_info > (3, 0):
        # Python 3 code in this block
        pip_cmd = "pip3"
    else:
        # Python 2 code in this block
        pip_cmd = "pip"

    for dist in pip.get_installed_distributions():
        cmd = "{0} install --upgrade {1}".format(pip_cmd, dist.project_name)
        # print(cmd)
        call(cmd, shell=True)


if __name__ == '__main__':
    pip_upgrade()