Merge pull request #11499 from chbrown/patch-1

Fix extension detection

IPython/utils/module_paths.py

@@ -64,7 +64,7 b' def find_mod(module_name):'
         return None
     else:
         split_path = module_path.split(".")
-        if split_path[1] in ["py", "pyw"]:
+        if split_path[-1] in ["py", "pyw"]:
             return module_path
         else:
             return None

IPython/utils/tests/test_module_paths.py

@@ -28,7 +28,8 b' import nose.tools as nt'
 
 env = os.environ
 TEST_FILE_PATH = split(abspath(__file__))[0]
-TMP_TEST_DIR = tempfile.mkdtemp()
+
+TMP_TEST_DIR = tempfile.mkdtemp(suffix='with.dot')
 #
 # Setup/teardown functions/decorators
 #
@@ -66,6 +67,13 b' def teardown():'
     shutil.rmtree(TMP_TEST_DIR)
     sys.path = old_syspath
 
+def test_tempdir():
+    """
+    Ensure the test are done with a temporary file that have a dot somewhere.
+    """
+    nt.assert_in('.',TMP_TEST_DIR)
+
+
 def test_find_mod_1():
     """
     Search for a directory's file path.