Calculate accuracy for CRF++ output file

crf_accuracy.py

import sys

f1 = open(sys.argv[1])
count = 0
true = 0
false = 0
sentences = 0
for line in f1:
	if line == '\n' or line.split()==[]:
		sentences+=1
		continue
	count = count + 1
	x = line.strip().split()
	if(x[-1]==x[-2]):
		true=true+1
	else:
		false = false+1

print '#true', '#false', '#total_words', '#sentences'
print true, false, count, sentences
print 'accuracy = ', (100.0*true/count)