import os from fetch import fetch 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")