countTBs.py

import os,sys
import getopt
import commands
import time
import ROOT
import urllib
import string
from optparse import OptionParser

totalsize=0
datasets = commands.getstatusoutput("dasgoclient -query='dataset dataset=/*/*2017*TkAl*Nov*/ALCARECO'")[1].split("\n")
print datasets

for pd in datasets:
     print pd,","
     toAdd=commands.getstatusoutput("dasgoclient -query='summary dataset="+pd+" | grep summary.file_size'")[1]
     if len(toAdd)>0:
         totalsize+=float(toAdd)
         #print "toAdd:",toAdd

print "======================="
print totalsize/(1000*1000*1000*1000)