Issue attachments for pydot/pydot-ng#97: https://github.com/pydot/pydot-ng/issues/97

patch.txt

Index: pydot.py
===================================================================
--- pydot.py	(revision 29)
+++ pydot.py	(working copy)
@@ -27,10 +27,12 @@
 import subprocess
 import tempfile
 import copy
+import warnings
+
 try:
     import dot_parser
 except Exception, e:
-    print "Couldn't import dot_parser, loading of dot files will not be possible."
+    warnings.warn("Couldn't import dot_parser, loading of dot files will not be possible.")