Answers for "csv.writer() append file"

python csv add row

import csv   

fields=['first','second','third']

with open(r'name', 'a') as f:
    writer = csv.writer(f)
    writer.writerow(fields)

append record in csv

import csv   
fields=['first','second','third']
with open(r'name', 'a') as f:
    writer = csv.writer(f)
    writer.writerow(fields)