Wrap the result in a DirList to avoid tuple unpacking and unused variables

setuptools/tests/test_egg_info.py

@@ -60,7 +60,7 @@ class TestEggInfo(object):
         self._create_project()
 
         self._run_install_command(tmpdir_cwd, env)
-        _, actual = self._find_egg_info_files(env.paths['lib'])
+        actual = self._find_egg_info_files(env.paths['lib'])
 
         expected = [
             'PKG-INFO',
@@ -83,7 +83,7 @@ class TestEggInfo(object):
             }
         })
         self._run_install_command(tmpdir_cwd, env)
-        egg_info_dir, _ = self._find_egg_info_files(env.paths['lib'])
+        egg_info_dir = self._find_egg_info_files(env.paths['lib']).base
         sources_txt = os.path.join(egg_info_dir, 'SOURCES.txt')
         assert 'docs/usage.rst' in open(sources_txt).read().split('\n')
 
@@ -108,8 +108,13 @@ class TestEggInfo(object):
             raise AssertionError(data)
 
     def _find_egg_info_files(self, root):
+        class DirList(list):
+            def __init__(self, files, base):
+                super(DirList, self).__init__(files)
+                self.base = base
+
         results = (
-            (dirpath, filenames)
+            DirList(filenames, dirpath)
             for dirpath, dirnames, filenames in os.walk(root)
             if os.path.basename(dirpath) == 'EGG-INFO'
         )