On Sun, Jun 7, 2015 at 10:44 PM, Jean-Marc Nuzillard < [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). --------------------------------------------------------------------------- > > 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. 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
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