warnings: Add example.

pfalcon · pfalcon · commit ffc30e8c68af · 2015-02-22T14:08:19.000+02:00
diff --git a/warnings/example_warn.py b/warnings/example_warn.py
@@ -0,0 +1,6 @@
+import warnings
+
+warnings.warn('block_size of %d seems too small; using our '
+                               'default of %d.',
+                               RuntimeError, 2)
+#                               RuntimeWarning, 2)
