Webtoon Download Program in Python

SaveWebtoonAllEpisode.py

import re, sys
import urllib2

webtoonURL = 'http://comic.naver.com/webtoon/detail.nhn?titleId='
subWebtoonURL = '&no='

def saveHtml(content, filename) :
    f = open(filename, 'w')
    f.write(content)
    f.close()

def getHtml(url) :
    response = urllib2.urlopen(url)
    return response.read()

def extractImgs(html) :
    exp = re.compile(r'<img.+?src="(http://imgcomic\.naver\.net/webtoon/[0-9]+/[0-9]+/(.+?\.(jpg|png|gif)))".*?>')
    imgs = exp.findall(html)
    return imgs

def printImages(images) :
    for img in images :
        print images[0] # full link
        print images[1] # file name
        print images[2] # extension
    return 0

def saveImage(imgName, link, index) :
    print 'start saveImage function!'
    fileName = imgName + str(index) + '.jpg'
    f = open(fileName, 'wb')

    print('link is ' + link)
    response = urllib2.urlopen(link).read()
    #  content = response.read()
    #print content
    f.write(response)
    f.close()
    return 0

def saveWebtoon(titleID, htmlName, index, imgName) :
    fullURL = webtoonURL + str(titleID) + subWebtoonURL + str(index)
    print ('fullURL : ' + fullURL)
    html = getHtml(fullURL)
    htmlFullName = htmlName + '_' +str(index) + '.html'
    saveHtml(html, htmlFullName)

    f = open(htmlFullName, 'r')
    html = f.read()
    f.close()

    images = extractImgs(html)
    if len(images) == 0 :
        print >> sys.stderr, "No Images!!"
        return 1

    firstURL = images[0][0][:22]
    secondURL = images[0][0][25:-5]

    fileNum = 1
    for img in images :
        currentURL = firstURL + 'com' + secondURL + str(fileNum) + '.jpg'
        saveImage(imgName, currentURL, fileNum)
        fileNum += 1

    return 0

def main() :
    # input about data
    titleID = input('Enter TitleID : ')
    finalEpisode = int(input('Enter Final Episode : '))
    htmlName = titleID
    imgName = input('Enter Image Name : ')

    for i in range(1, finalEpisode) :
        fullImageName = imgName + 'Episode' + str(i) + '_'
        saveWebtoon(titleID, htmlName, i, fullImageName)

    return 0

if __name__ == '__main__' :
    sys.exit(main())