My guess, and this is hard to test, is that the problem is somehow due to the fact that you have both PIL and pillow installed.
A quick experiment would be to try uninstalling PIL. -greg On Monday, June 8, 2015, Jean-Marc Nuzillard <[email protected]> wrote: > Dear Greg, > > Le 08/06/2015 04:41, Greg Landrum a écrit : > > > > On Sun, Jun 7, 2015 at 10:44 PM, Jean-Marc Nuzillard < > [email protected] > <javascript:_e(%7B%7D,'cvml','[email protected]');>> wrote: > >> Hello, >> >> I just installed RDKit on Windows7, with the intention of >> using it from IPython. >> I installed python 2.7 for AMD64 (the one distributed by ActiveState). >> >> If you're just getting started with python on windows, I would > *strongly* suggest using anaconda (http://continuum.io/downloads) instead > of ActiveState python. Anaconda is a very well supported scientific python > distribution. It also makes it extremely easy to install the RDKit ( > https://conda.binstar.org/rdkit). > > > > Thanks for the advice. > > > --------------------------------------------------------------------------- >> >> KeyError Traceback (most recent call >> last)...snip ... >> KeyError: 'PNG' >> >> >> I installed a lot of python modules recently :-) >> >> Any idea about the one I missed? >> >> > This error is usually due to the fact that libpng is missing on the > system or was not compiled into PIL/Pillow. > On Windows I believe that the latter is more likely to be the case. > > > > I installed PIL 1.1.7 from http://www.pythonware.com/products/pil/ > (PIL-1.1.7.win-amd64-py2.7.exe), > most probably because the simple "pip install PIL" I tried first did not > work. > I also installed pillow from http://www.lfd.uci.edu/~gohlke/pythonlibs/ > (Pillow-2.8.2-cp27-none-win_amd64.whl). > > The commands: > > *import rdkit* > *from PIL import Image* > *im = Image.open('test.png')* > *im.save('out.png', format='PNG')* > > operate as expected (from a recent mail by Paul Emsley). > The PIL I installed seems to support the PNG format. > > This stackoverflow question makes it look like there's a problem with > the activestate pil build and that you will need to install that yourself > from another place: > > http://stackoverflow.com/questions/7616987/pil-png-activestate-on-windows-7-zlib-png-zip-support-not-available > > -greg > > > All the best, > > Jean-Marc > > -- > Jean-Marc Nuzillard > Institut de Chimie Moléculaire de Reims > CNRS UMR 7312 > Moulin de la Housse > CPCBAI, Bâtiment 18 > BP 1039 > 51687 REIMS Cedex 2 > France > > Tel : 03 26 91 82 10 > Fax : 03 26 91 31 66http://www.univ-reims.fr/ICMR > http://www.univ-reims.fr/LSD/http://www.univ-reims.fr/LSD/JmnSoft/ > >
------------------------------------------------------------------------------
_______________________________________________ Rdkit-discuss mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/rdkit-discuss
