Re: [ROOT] Python module for easy class generation

On Sun, 2 Jan 2011 14:28:37 -0600, Noel Dawe <Noel.Dawe <at> cern.ch> wrote:
> No problem then. I've modified my "classfactory" to keep the shared
> libraries in ~/.rootpy/dicts (now in my LD_LIBRARY_PATH). When I request a
> dictionary, it first checks for the library there (using a file containing a
> lookup table) and loads it, otherwise it compiles it there and adds it to
> the lookup table. No mess left behind, no bookkeeping required by the user,
> and no needless regeneration of the same dictionary by future
> requests.

you probably want to have a ROOT-version dependent directory.
also, in well behaved systems (ie: POSIX conformant) putting temporary
files under $TMPDIR (or with tempfile.tempdir in python) should do the
trick of not cluttering $PWD. batch systems not honouring $TMPDIR should
be fixed.

my 2 euro-cents,
sebastien.

> 
> Noel
> 
> On Sun, Jan 2, 2011 at 4:56 AM, Axel Naumann <Axel.Naumann <at> cern.ch> wrote:
> 
> > Hi,
> >
> > the advantage now is that users immediately see what to remove when they
> > want to clean up all files, e.g. when something in their class changed
> > and ROOT didn't detect the dependencies correctly. And I'm not sure what
> > happens when writing to ~/ on batch / grid nodes. PWD is usually a safe
> > bet.
> >
> > Cheers, Axel.
> >
> > On 1/1/11 9:06 PM, Noel Dawe wrote:
> > > Why not automatically place these dictionaries somewhere less invasive?
> > > Like /tmp or ~/.rootsys?
> > >
> > > Noel
> > >
> > > On Fri, Dec 31, 2010 at 2:22 AM, Axel Naumann <Axel.Naumann <at> cern.ch
> > > <mailto:Axel.Naumann <at> cern.ch>> wrote:
> > >
> > >     Hi Noel,
> > >
> > >     that's your dictionary :) You can remove it, but then ROOT will need
> > to
> > >     regenerate it every time it needs the dictionary.
> > >
> > >     Cheers, Axel.
> > >
> > >
> > >     On 12/31/10 5:10 AM, Noel Dawe wrote:
> > >     > When using GenerateDictionary in python I end up with a lot of
> > >     > AutoDict_vector_vector_float___.cxx* garbage that is not cleaned
> > up. I
> > >     > suppose this is an easy fix?
> > >     >
> > >     > Noel
> > >     >
> > >     > On Thu, Dec 23, 2010 at 10:33 PM, Philippe Canal <pcanal <at> fnal.gov
> > >     <mailto:pcanal <at> fnal.gov>
> > >     > <mailto:pcanal <at> fnal.gov <mailto:pcanal <at> fnal.gov>>> wrote:
> > >     >
> > >     >     Hi Noel,
> > >     >
> > >     >     In newer version of ROOT you can simply your scripts by using
> > >     >
> > >     >        gInterpreter->GenerateDictionary("vector<vector<float> >",
> > >     "vector");
> > >     >
> > >     >     which does most of the work of your make_class.
> > >     >
> > >     >     Cheers,
> > >     >     Philippe.
> > >     >
> > >     >
> > >     >     On 12/22/10 4:29 PM, Noel Dawe wrote:
> > >     >
> > >     >         For all the python fans out there I've attached a simple
> > >     module
> > >     >         which may be used to generate classes in PyROOT which are
> > not
> > >     >         available by default (like vector<vector<float> > etc.)
> > >     >
> > >     >         Example usage:
> > >     >
> > >     >         Python 2.6.6 (r266:84292, Sep 15 2010, 16:22:56)
> > >     >         [GCC 4.4.5] on linux2
> > >     >         Type "help", "copyright", "credits" or "license" for more
> > >     >         information.
> > >     >         >>> from classfactory import *
> > >     >         >>> make_class("vector<vector<float> >", "<vector>")
> > >     >         True
> > >     >         >>> ROOT.vector("vector<float>")()
> > >     >         <ROOT.vector<vector<float> > object at 0x2b1cf10>
> > >     >         >>> make_class("vector<TH1D>", "TH1D.h")
> > >     >         True
> > >     >         >>> ROOT.vector("TH1D")()
> > >     >         <ROOT.vector<TH1D> object at 0x2b2c160>
> > >     >         >>>
> > >     >
> > >     >         Suggestions/improvements are welcome.
> > >     >
> > >     >         Cheers,
> > >     >         Noel
> > >     >
> > >     >
> > >
> > >
> >
> >
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