Make the package compatible with python 2.70.9

There is actually unittest module now, so we have to work for the
possibility that unittest2 is not available.

Fixes #49.

6 files changed, 24 insertions, 6 deletions

diff --git a/test/__init__.py b/test/__init__.py
index 83cdd6d..05ba3b2 100644
--- a/test/__init__.py
+++ b/test/__init__.py
@@ -2,7 +2,10 @@
 from __future__ import absolute_import, print_function, unicode_literals
 import logging
 import yamlish
-import unittest2 as unittest
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
 import yaml
 import tempfile
 import textwrap
diff --git a/test/test_input.py b/test/test_input.py
index cfd4142..6b5c5ca 100644
--- a/test/test_input.py
+++ b/test/test_input.py
@@ -1,7 +1,10 @@
 # -*- coding: utf-8 -*-
 from __future__ import absolute_import, print_function, unicode_literals
 import test
-import unittest2 as unittest
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
 import yamlish
 
 test_data_list = [
diff --git a/test/test_load.py b/test/test_load.py
index b5ac95e..7a76ae1 100644
--- a/test/test_load.py
+++ b/test/test_load.py
@@ -1,6 +1,9 @@
 # -*- coding: utf-8 -*-
 from __future__ import absolute_import, print_function, unicode_literals
-import unittest2 as unittest
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
 
 class TestBasics(unittest.TestCase):
     def test_import(self):
diff --git a/test/test_output.py b/test/test_output.py
index 888f812..1105b84 100644
--- a/test/test_output.py
+++ b/test/test_output.py
@@ -5,7 +5,10 @@ Test general output functionality.
 Without much stress on the format itself.
 """
 from __future__ import absolute_import, print_function, unicode_literals
-import unittest2 as unittest
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
 import yamlish
 import yaml
 import logging
diff --git a/test/test_reader.py b/test/test_reader.py
index 0676b30..a34104c 100644
--- a/test/test_reader.py
+++ b/test/test_reader.py
@@ -3,7 +3,10 @@ from __future__ import absolute_import, print_function, unicode_literals
 import yaml
 import yamlish
 import test
-import unittest2 as unittest
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
 
 test_data_list = [
   {
diff --git a/test/test_writer.py b/test/test_writer.py
index 7d9e690..a3f3893 100644
--- a/test/test_writer.py
+++ b/test/test_writer.py
@@ -1,7 +1,10 @@
 # -*- coding: utf-8 -*-
 from __future__ import absolute_import, print_function, unicode_literals
 
-import unittest2 as unittest
+try:
+    import unittest2 as unittest
+except ImportError:
+    import unittest
 import test
 import yamlish