PYTHON

Update all packages using pip on Windows

# Open your command shell and enter the below command. This will upgrade all packages system-wide to the latest or newer version available in the Python Package Index (PyPI)
pip freeze | %{$_.split('==')[0]} | %{pip install --upgrade $_}

#outputs the list of installed packages
pip freeze > requirements.txt

#updates all packages
pip install -r requirements.txt --upgrade

Update All Python Packages On Linux

pip3 list --outdated --format=freeze | grep -v '^-e' | cut -d = -f 1 | xargs -n1 pip3 install -U

python update installed packages

py2
$ pip install pip-review

$ pip-review --local --interactive

py3
$ pip3 install pip-review

$ py -3 -m pip_review --local --interactive

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)