[Tutor] Converting a string into dictionary references

[Gerhardus Geldenhuis]

Hi
Appologies about the subject I could not think of a better description.

I have this very simple function:

def readcsvfile(filename):
  f = open(filename, 'ro')
  csvdata = csv.DictReader(f)
  for row in csvdata:
    print row["column3"]+','+row["column1"]

I have another inputfile that will be comma separated list of values.
Eg:
column3,column4,column10

The idea is that I use this inputfile to tranform the original csv file. I
thus want a new file with only the specified columns. I am sure there is an
elegant way of doing this but I am not sure how to convert my print
statement into something more dynamic. Any pointers would be appreciated.

Regards

-- 
Gerhardus Geldenhuis
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