import can
import csv
import datetime
import re

filename = open('C:\Users\xyz\files\time_linear_Hexa.csv', "w")
log1 = can.BLFReader('C:\Users\xyz\blf files\VIN5_2019-04-03_10-33-59_39.blf')
filename.write(re.search("([0-9]{4}-[0-9]{2}-[0-9]{2})", filename))
filename.write('base hex  timestamps absoluteninternal events logged n// version 11.0.0 n')