blocks.py

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

filesToKeep=[]

ds="/EGamma/Tier0_REPLAY_vocms047-SiStripCalSmallBiasScan-PromptReco-v267/ALCARECO"
files = commands.getstatusoutput("dasgoclient -query='file dataset="+ds+"'")[1].split("\n")
for file in files:
    lumis = commands.getstatusoutput("dasgoclient -query='lumi file="+file+"'")[1].replace('[','').replace(']','').split(",")
    for lumi in lumis: 
        if(int(lumi)>=895 and int(lumi)<=1067):
            #print lumi,file
            filesToKeep.append(file)

for file in filesToKeep:
    block = commands.getstatusoutput("dasgoclient -query='block file="+file+"'")[1].split("\n")
    print block