def roundTime(dt=None, roundTo=60):
  """Round a datetime object to any time laps in seconds
  dt : datetime.datetime object, default now.
  roundTo : Closest number of seconds to round to, default 1 minute.
  Author: Thierry Husson 2012 - Use it as you want but don't blame me.
  """
  if dt == None : dt = datetime.datetime.now()
  seconds = (dt.replace(tzinfo=None) - dt.min).seconds
  rounding = (seconds+roundTo/2) // roundTo * roundTo
  return dt + datetime.timedelta(0,rounding-seconds,-dt.microsecond)

def times10sec(startT, endT):
 retval = startT
 yield startT
 while startT < endT:
   startT = startT + datetime.timedelta(seconds=10)
   yield startT

import csv
cr01 = csv.reader(open ('c:\kewoo\eai\d20171024.0930-1055.AcurityConnector.csv'))

simul = {}

for i in cr01:
 startT = roundTime(datetime.datetime.strptime(i[4],"%Y-%m-%d %H:%M:%s"))
 endT = roundTime(datetime.datetime.strptime(i[5],"%Y-%m-%d %H:%M:%s"))
 for j in times10sec(startT, endT):
   if j in simul:
     simul[j] = simul[j] + 1
   else:
     simul[j] = 0
 if endT in simul:
   simul[endT] = simul[endT] - 1
 else:
   simul[endT] = 0



 #if i[3] == '0':
 #  endT = roundTime(datetime.datetime.strptime(i[5],"%Y-%m-%d %H:%M:%s"))
 #else:
 #  endT = roundTime(datetime.datetime.strptime(i[5],"%Y-%m-%d %H:%M:%s")) +  datetime.timedelta(seconds=65)

for x in simul.iteritems():
 print str(x[0]), ", ", x[1]