How can I specify a python version using setuptools? : <p>Is there a way to specify a python version to be used with a python package defined in setup.py? </p>

<p>My setup.py currently looks like this: </p>

<pre><code>from distutils.core import setup
setup(
  name = 'macroetym',
  packages = ['macroetym'], # this must be the same as the name above
  version = '0.1',
  description = 'A tool for macro-etymological textual analysis.',
  author = 'Jonathan Reeve',
  author_email = 'jon.reeve@gmail.com',
  url = 'https://github.com/JonathanReeve/macro-etym', 

  download_url = 'https://github.com/JonathanReeve/macro-etym/tarball/0.1', # FIXME: make a git tag and confirm that this link works
  install_requires = ['Click', 'nltk', 'pycountry', 'pandas',
                      'matplotlib'],
  include_package_data = True,
  package_data = {'macroetym': ['etymwm-smaller.tsv']}, 
  keywords = ['nlp', 'text-analysis', 'etymology'], 
  classifiers = [],
  entry_points='''
      [console_scripts]
      macroetym = macroetym.main:cli
  ''',
)
</code></pre>

<p>It's a command-line program. My script runs using Python 3, but a lot of operating systems still have Python 2 as the default. How can I specify a python version to be used here? I can't seem to find anything in <a href="https://pythonhosted.org/setuptools/setuptools.html#declaring-dependencies" rel="noreferrer">the docs</a>, but maybe I'm not looking in the right place? </p>
