Added approvals version of python test

python/tests/test_gilded_rose_approvals.py

@@ -0,0 +1,21 @@
+import io
+import sys
+
+from approvaltests import verify
+from texttest_fixture import main
+
+def test_gilded_rose_approvals():
+    orig_sysout = sys.stdout
+    try:
+        fake_stdout = io.StringIO()
+        sys.stdout = fake_stdout
+        sys.argv = ["texttest_fixture.py", 30]
+        main()
+        answer = fake_stdout.getvalue()
+    finally:
+        sys.stdout = orig_sysout
+
+    verify(answer)
+
+if __name__ == "__main__":
+    test_gilded_rose_approvals()