The DictWriter
doesn’t work the way you expect.
with open('dict.csv', 'w') as csv_file:
writer = csv.writer(csv_file)
for key, value in mydict.items():
writer.writerow([key, value])
To read it back:
with open('dict.csv') as csv_file:
reader = csv.reader(csv_file)
mydict = dict(reader)
which is quite compact, but it assumes you don’t need to do any type conversion when reading