import csv
with open('d:\data.csv', 'w', newline='') as csv_file:
writer = csv.writer(csv_file, delimiter=' ', quotechar='|', quoting=csv.QUOTE_MINIMAL)
writer.writerow(['data1'] + ['A1'])
writer.writerow(['data2'] + ['A2'])
writer.writerow(['data3'] + ['A3'])
'''
run:
data.csv
--------
data1 A1
data2 A2
data3 A3
'''