Merge pull request #9719 from asottile/fix-setuptools-pollution

prevent import-time side-effects from setuptools bundled importlib-metadata

Author: asottile

testing/test_doctest.py

@@ -803,8 +803,8 @@ def test_valid_setup_py(self, pytester: Pytester):
         """
         p = pytester.makepyfile(
             setup="""
-            from setuptools import setup, find_packages
             if __name__ == '__main__':
+                from setuptools import setup, find_packages
                 setup(name='sample',
                       version='0.0',
                       description='description',