A patch to change pybel.py from version 2.3.2 to apply commit df59c4a630cf753723d1318c40479d48b7507e1c (fixes Molecule.draw())

ob-2-3-2-patch.diff

--- ../scripts/python/pybel.py  2012-10-03 21:08:52.000000000 +0200
+++ /usr/local/lib/pybel.py     2013-06-24 22:40:30.024896494 +0200
@@ -495,7 +495,9 @@
 
         Tkinter and Python Imaging Library are required for image display.
         """
-        if not "png2" in outformats:
+        obconversion = ob.OBConversion()
+        formatok = obconversion.SetOutFormat("_png2")
+        if not formatok:
             errormessage = ("PNG output format not found. You should compile "
                             "Open Babel with PNG support. See installation "
                             "instructions for more information.")
@@ -529,7 +531,7 @@
             
             filedes, filename = tempfile.mkstemp()
 
-        workingmol.write("png2", filename=filename, overwrite=True)
+        workingmol.write("_png2", filename=filename, overwrite=True)
 
         if show:
             if sys.platform[:4] == "java":