python統計テキストの単語数

#!/usr/bin/env python  

file_name="hello.txt"

line_counts=0
word_counts=0
char_counts=0

file=open(file_name,"r")
for line in file.readlines():
    words=line.split(' ')
    line_counts+=1
    word_counts+=len(words)
    char_counts+=len(line)
	 
print "line_count",line_counts
print "word_count",word_counts
print "char_count",char_counts