fname = raw_input('Enter the file name: ')
if fname == 'na na boo boo' :
print 'NA NA BOO BOO TO YOU - You have been punkd!'
exit()
try:
fhand = open(fname)
except:
print 'File cannot be opened:', fname
exit()
count = 0
for line in fhand:
if line.startswith('Subject:') :
count = count + 1
print 'There were', count, 'subject lines in', fname