pandas to_csv append
# with headers
df.to_csv('my_csv.csv', mode='a')
# without headers
df.to_csv('my_csv.csv', mode='a', header=None)
alequenildo
# with headers
df.to_csv('my_csv.csv', mode='a')
# without headers
df.to_csv('my_csv.csv', mode='a', header=None)