For turning a csv into a json file

gistfile1.txt

import csv
import sys
import json

#Add the CSV headers into the fieldnames array
fieldnames=['changethis','changethis2','changethis3']

def convert(filename):
 csv_filename = filename[0]
 print "Opening CSV: ",csv_filename
 f=open(csv_filename, 'r')
 csv_reader = csv.DictReader(f,fieldnames)
 json_filename = csv_filename.split(".")[0]+".json"
 print "Saving JSON: ",json_filename
 jsonf = open(json_filename,'w')
 data = json.dumps([r for r in csv_reader])
 jsonf.write(data)
 f.close()
 jsonf.close()

if __name__=="__main__":
 convert(sys.argv[1:])

gistfile2.txt

#Then to eat that json data:

import json
from pprint import pprint
json_data=open('json_data')

data = json.load(json_data)

for item in data:
 print item["changethiskey"]

#given a csv of: 
#changethiskey
#1
#this should print 1

these are both in python