csvs to and from dics

csv_dicts.py

import csv


def dicts_from_csv(filename):
  with open(filename, 'rU') as f:
    reader = csv.DictReader(f)
    return [row for row in reader]


def csv_from_dicts(filename, dicts, fieldnames=None):
  if not fieldnames:
    fieldnames = list(set([key for d in dicts for key in d.iterkeys()]))
  with open(filename, 'w+') as f:
    writer = csv.DictWriter(f, fieldnames)
    writer.writeheader()
    writer.writerows(dicts)