Add an os.get_exec_path() function to return the list of directories
that launching a subprocess will search for the executable.
Refactors some code in os._execvpe().
diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index 1ff356c..9846d92 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -407,6 +407,27 @@
self.assertTrue(isinstance(env.data, dict))
self.assertEqual(repr(env), 'environ({!r})'.format(env.data))
+ def test_get_exec_path(self):
+ defpath_list = os.defpath.split(os.pathsep)
+ test_path = ['/monty', '/python', '', '/flying/circus']
+ test_env = {'PATH': os.pathsep.join(test_path)}
+
+ saved_environ = os.environ
+ try:
+ os.environ = dict(test_env)
+ # Test that defaulting to os.environ works.
+ self.assertSequenceEqual(test_path, os.get_exec_path())
+ self.assertSequenceEqual(test_path, os.get_exec_path(env=None))
+ finally:
+ os.environ = saved_environ
+
+ # No PATH environment variable
+ self.assertSequenceEqual(defpath_list, os.get_exec_path({}))
+ # Empty PATH environment variable
+ self.assertSequenceEqual(('',), os.get_exec_path({'PATH':''}))
+ # Supplied PATH environment variable
+ self.assertSequenceEqual(test_path, os.get_exec_path(test_env))
+
class WalkTests(unittest.TestCase):
"""Tests for os.walk()."""