Re: [igraph] error calling g.simplify()

[Tamás Nepusz]

Hi Ahmed,  

I have checked your CSV file. Line 633433 contains three entries, not two. The 
DictReader class from Python will convert this into a dictionary where there 
are three keys: “source", “target” and None. None (as a Python object) then 
ends up as an attribute name for edges, and this is something that the Python 
interface is not prepared for (because it shouldn’t happen anyway), so you get 
the error message that you’ve seen. Fix line 633433 in your file and it should 
be okay. In the meanwhile, I will fix the Graph.DictList() method to ensure 
that this yields an exception during the construction of the graph.  

--  
T.

>  
> On Wed, Feb 12, 2014 at 3:09 PM, Tamás Nepusz <address@hidden 
> (mailto:address@hidden)> wrote:
> > Hello,
> >  
> > Yes, it’s likely to be a character encoding issue or something like that. I 
> > would need to see the CSV file and the code you used to construct the graph 
> > to say more about this. Please do not send the CSV file to the list; send 
> > it directly to me instead or upload it somewhere and send me the URL.
> >  
> > --
> > T.
> >  
> >  
> > On Wednesday, 12 February 2014 at 17:41, Ahmed Abdeen Hamed wrote:
> >  
> > > Hello friends,
> > >  
> > > I load my graph from a CSV file and I think call the g.simplify() 
> > > function, then I get this error:
> > >  
> > > TypeError: string or unicode object expected
> > >  
> > > Unless I am mistaken, there might be a character encoding issues in one 
> > > of my nodes. I just don't know what line number this is. Any clue on how 
> > > to resolve this error?
> > >  
> > > Thanks very much,
> > >  
> > > -Ahmed
> > > _______________________________________________
> > > igraph-help mailing list
> > > address@hidden (mailto:address@hidden) (mailto:address@hidden)
> > > https://lists.nongnu.org/mailman/listinfo/igraph-help
> >  
>  
>  
>  
> Attachments:  
> - mesh-rules.csv
>  
> - toy-network-mining.py
>