append csv python code example

Example 1: pandas append csv files a+

df.to_csv('my_csv.csv', mode='a', header=False)

Example 2: append to csv python

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

Example 3: python csv add row

import csv   

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

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