i want all rows :(

import csv
import serial

serPort = serial.Serial("/dev/ttyUSB0")

print(serPort.name)
while True:
    dataRaw = serPort.readline().strip()
    dataList = dataRaw.decode('ascii').split(', ')
    data = [int(d) for d in dataList]
    print(data)

    with open('data.csv', mode='w') as f:
        writer = csv.writer(f, delimiter=',', quotechar='"')
        writer.writerow(data)

serPort.close()