Kent,
Thanks this is exactly the solution I am looking for... so simple.
On 9/15/07, Kent Johnson <[EMAIL PROTECTED]> wrote:
>
> John wrote:
> > #Set up writer
> > import csv
> > vardict=vars()
> > for var in vardict:
> > if var=='allcum' or var=='alldhdt':
> > outfile=in_path+'/'+dataset+'_'+str(var)+'.csv'
> > writer = csv.writer(open(outfile, "wb"))
> > writer.writerows(var)
> >
> > I'm trying to do the above, but of course get an error because vardict
> > is only referencing vars(), thus changes size... also, I tried
> > vardict=[vars()], but this fails as well??
>
> I'm not too clear what you are trying to do here. Do you want the values
> of the variables allcum and alldhdt?
>
> vars() gives you a dict whose keys are varible names and values are,
> well, the values. I think you are trying to write the contents of allcum
> to a file with allcum in the name?
>
> You could do it with vars like this:
>
> for var in ['allcum', 'alldhdt']:
> outfile=in_path+'/'+dataset+'_'+var+'.csv'
> writer = csv.writer(open(outfile, "wb"))
> writer.writerows(vars()[var])
>
> or you could iterate a list of name, value tuples directly:
>
> for name, value in [('allcum', allcum), ('alldhdt', alldhdt)]:
> outfile=in_path+'/'+dataset+'_'+name+'.csv'
> writer = csv.writer(open(outfile, "wb"))
> writer.writerows(value)
>
> I think I prefer the second, even with the duplication of names; it
> feels more explicit to me.
>
> Another alternative would be to accumulate the values in a dict with
> keys 'allcum' and 'alldhdt'. Then you would look up in that dict instead
> of in vars().
>
> HTH,
> Kent
>
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