import glob
import os

#Change Directory According to your Need
os.chdir("/home/cdac/Downloads")
filename_arr={}
i=0
for files in glob.glob("*.txt"):
    filename_arr[i] = files
    i= i+1
print "Number files available for modifying"
print i

c=0
for key,value in filename_arr.items():
    #Give path where you want to store your file
    e=open("Madhu/"+filename_arr[c],"w")
    print "name of opened file for writing"
    print filename_arr[c];
    f=open(value,"r")
#    j=0
    while True:
        l=f.readline()
        l1=len(l)
	if l1==0:
		break
#	if j==1:
#		print l
	for m,var in enumerate(l):
		if var=="[":
			l2=l[m-25:m+28]
			e.write(l2)
			e.write("\n")
#				print len(l2)
#				break
		

#	j=j+1
#       e.write(l)
    e.close()
    f.close()
    c=c+1
    print c
#    print j