How to update all installed packages in Python with pip on Windows

Simplest method is to use pip-review package,

1. pip install pip-review

2. pip-review --interactive

You can update all the packages in following way,

1. import pkg_resources

2. from subprocess import call

3. packages =[dist.project_name for dist in pkg_resources.working_set]

4. call("pip install --upgrade "+' '.join(packages), shell=True)

This method works on Windows as well.