pip update all powershell code example

Example 1: update all pip packages

pip freeze | %{$_.split('==')[0]} | %{pip install --upgrade $_}

Example 2: update all modules python in cmd

import pkg_resources
from subprocess import call

packages = [dist.project_name for dist in pkg_resources.working_set]
call("pip install --upgrade " + ' '.join(packages), shell=True)