ngram.py - /usr/bin/python import sys from pprint import...

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#!/usr/bin/python import sys from pprint import pprint import operator import time def main(): if len(sys.argv) != 5: print "Usage: the program take exactly 4 inputs: an integer n that is the length of the ngrams, an integer s that is the length of the slide, the name of the file to analyze, the name of the output file" return f1 = open(sys.argv[3], 'rb') f2 = open(sys.argv[4], 'wb') n = int(sys.argv[1]) s = int(sys.argv[2]) count = {} time1 = time.clock() while True: currentNgram = f1.read(n) if len(currentNgram) != n: break currentNgram = ngramToHex(currentNgram) if count.has_key(currentNgram): count[currentNgram] += 1 else: count[currentNgram] = 1 f1.seek(s-n, 1) sortedByCount = sorted(count.items(), key=operator.itemgetter(0))
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