Download setuptools from a specified location and return its filename
`version` should be a valid setuptools version number that is available as an egg for download under the `download_base` URL (which should end with a '/'). `to_dir` is the directory where the egg will be downloaded. `delay` is the number of seconds to pause before an actual download attempt.
was_imported = 'pkg_resources' in sys.modules or 'setuptools' in sys.modules def do_download(): egg = download_setuptools(version, download_base, to_dir, download_delay) sys.path.insert(0, egg) import setuptools; setuptools.bootstrap_install_from = egg
egg = None try: egg = download_setuptools(version, delay=0) sys.path.insert(0,egg) from setuptools.command.easy_install import main
except ImportError: from easy_install import main main(list(argv)+[download_setuptools(delay=0)]) sys.exit(0) # try to force an exit else:
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