$ pip install pypi-show-urls

# Show all the counts for a bunch of packages
$ pypi-show-urls -p package1 package2 package3

# Show all the counts for a set of packages owned by users
$ pypi-show-urls -u user1 user2 user3

# Show all the counts for a set of packages in a list of requirements files
$ pypi-show-urls -r requirements.txt requirements-dev.txt

# Show all the urls found and all the versions only available externally
$ pypi-show-urls -v -p package1 package2 package3
$ pypi-show-urls -v -u user1 user2 user3
$ pypi-show-urls -v -r requirements.txt requirements-dev.txt