save to a csv file python code example

Example 1: code how pandas save csv file

df.to_csv('out.csv')

Example 2: csv python write

import csv

with open('names.csv', 'w') as csvfile:
    fieldnames = ['first_name', 'last_name']
    writer = csv.DictWriter(csvfile, fieldnames=fieldnames)

    writer.writeheader()
    writer.writerow({'first_name': 'Baked', 'last_name': 'Beans'})
    writer.writerow({'first_name': 'Lovely', 'last_name': 'Spam'})
    writer.writerow({'first_name': 'Wonderful', 'last_name': 'Spam'})

Example 3: python save as csv

import numpy as np
np.savetxt('data.csv', (col1_array, col2_array, col3_array), delimiter=',')