fix PYTHONPATH setup if not previously set

f5a99b86 · Stefan Behnel · 33abc027 · f5a99b86
Commit f5a99b86 authored Oct 04, 2010 by Stefan Behnel
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runtests.py runtests.py +4 -1

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--- a/runtests.py
+++ b/runtests.py
@@ -667,7 +667,10 @@ class EndToEndTest(unittest.TestCase):
            os.environ['PYTHONPATH'] = self.cython_root + os.pathsep + (old_path or '')
            self.assertEqual(0, os.system(commands))
        finally:
-            os.environ['PYTHONPATH'] = old_path
+            if old_path:
+                os.environ['PYTHONPATH'] = old_path
+            else:
+                del os.environ['PYTHONPATH']
 # TODO: Support cython_freeze needed here as well.