python csv add row

1with open('document.csv','a') as fd:
2    fd.write(myCsvRow)

1import csv   
2
3fields=['first','second','third']
4
5with open(r'name', 'a') as f:
6    writer = csv.writer(f)
7    writer.writerow(fields)
8    

1import csv   
2fields=['first','second','third']
3with open(r'name', 'a') as f:
4    writer = csv.writer(f)
5    writer.writerow(fields)