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
_______________________________________________
Tutor maillist - Tutor@python.org
http://mail.python.org/mailman/listinfo/tutor
