exercise2/task1/somedecode.py

   1 #!/usr/bin/env python
   2
   3 import csv
   4 import binascii
   5
   6 def somedecode(filename):
   7   with open(filename, 'rb') as csvfile:
   8     spamreader = csv.reader(csvfile, delimiter=',', quotechar='"')
   9     header = None
  10     bits = ""
  11
  12     for row in spamreader:
  13       if header is None:
  14         header = row
  15         continue
  16
  17       if row[2] == '114.176.157.191' and row[10] == '5950':
  18         bits += "0"
  19       if row[2] == '114.176.157.191' and row[10] == '5960':
  20         bits += "1"
  21
  22     bits = bits[:-(len(bits)%8)]
  23     print binascii.unhexlify('%x' % int(bits, 2))
  24
  25 if __name__ == "__main__":
  26         somedecode("flow_114.176.157.191_221.72.61.209.csv")
  27