Find all packages installed with easy_install/pip?

Question

Is there a way to find all Python PyPI packages that were installed with easy_install or pip? I mean, excluding everything that was/is installed with the distributions tool

Answer 1

As @almenon pointed out, this no longer works and it is not the supported way to get package information in your code. The following raises an exception:

import pip
installed_packages = dict([(package.project_name, package.version) 
                           for package in pip.get_installed_distributions()])

To accomplish this, you can import pkg_resources. Here's an example:

import pkg_resources
installed_packages = dict([(package.project_name, package.version)
                           for package in pkg_resources.working_set])

I'm on v3.6.5