handle FutureWarning not existing in py <2.3

Author: Richard Jones

roundup/backends/locking.py

@@ -19,18 +19,23 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
-# $Id: locking.py,v 1.3 2003-02-06 05:43:47 richard Exp $
+# $Id: locking.py,v 1.4 2003-02-06 09:40:21 richard Exp $
 
 '''This module provides a generic interface to acquire and release
 exclusive access to a file.
 
 It should work on Unix and Windows.
 '''
 
-import warnings
-warnings.filterwarnings("ignore",
-    r'hex/oct constants > sys\.maxint .*', FutureWarning,
-    'portalocker', 0)
+try:
+    x=FutureWarning
+    import warnings
+    warnings.filterwarnings("ignore",
+        r'hex/oct constants > sys\.maxint .*', FutureWarning,
+        'portalocker', 0)
+    del x
+except:
+    pass
 
 import portalocker