Pillow/winbuild/get_pythons.py

from fetch import fetch
import os

if __name__ == "__main__":
    for version in ["2.7.15", "3.4.4"]:
        for platform in ["", ".amd64"]:
            for extension in ["", ".asc"]:
                fetch(
                    "https://www.python.org/ftp/python/%s/python-%s%s.msi%s"
                    % (version, version, platform, extension)
                )

    # find pip, if it's not in the path!
    os.system("pip install virtualenv")