> > I could resolve it by defining a small function:
> >
> > def getValue(mydict,keys):
> > A=[];
> > for i in keys:
> > A=A+[mydict[i]]
> > return A
> >
> > and then calling it: D=getValue(prog,sCommonFeatures);
> > (instead of D=[prog[key1] for key1 in list(sCommonFeatures)];)
> >
> > but I'm still surprised why the latter one didn't work!
>
> It would be more efficient to do the following
>
> def getValue(mydict, keys):
> A=[]
> for i in keys:
> A.append( mydict[i] )
> return A
Less efficiently, but maybe more useful if you need to check
against sOtherFeatures you can do the following.
D = [value for key, value in prog.items() if key in sOtherFeatures
or key in sCommonFeatures] # Python 3.x syntax
Ramit
Ramit Prasad | JPMorgan Chase Investment Bank | Currencies Technology
712 Main Street | Houston, TX 77002
work phone: 713 - 216 - 5423
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