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Python - randomYahoo

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  1. import os
  2. import random
  3. import re
  4. import urllib
  5. import urllib2
  6.  
  7. class yahooImages(object):
  8.  
  9.     RE_IMAGEURL = re.compile('&imgurl=(.+?)&', re.DOTALL | re.IGNORECASE)
  10.  
  11.     def __init__(self):
  12.  
  13.         self.imagesURLs = {}
  14.  
  15.     def getRandomImages(self, imageName=None):
  16.         '''
  17.         imageName = Nome dell'immagine da cercare, se non impostato viene generato un nome Random
  18.  
  19.         Scarica dal sito YahooImages delle immagini in maniera random...
  20.         '''
  21.  
  22.         htmlPage = ''
  23.         request = ''
  24.  
  25.         if imageName == None: imageName = self._randomWords()
  26.  
  27.         requestURL = 'http://it.search.yahoo.com/search/images?p=%s&b=%d' % (imageName, (random.randint(0, 50)*10))
  28.         requestHeaders = {'User-Agent':'yahooImages/1.0'}
  29.  
  30.         try:
  31.             request = urllib2.Request(requestURL, None, requestHeaders)
  32.             htmlPage = urllib2.urlopen(request).read(500000)
  33.         except:
  34.             pass
  35.  
  36.         results = yahooImages.RE_IMAGEURL.findall(htmlPage)
  37.  
  38.         if len(results) > 0:
  39.             for image in results:
  40.                 imageURL = urllib.unquote_plus(image)
  41.                 if not imageURL.startswith('http://'): imageURL = 'http://'+imageURL
  42.                 self.imagesURLs[imageURL] = 0
  43.  
  44.     def _randomWords(self):
  45.         '''
  46.         Viene generata una parola in maniera Random...
  47.         '''
  48.  
  49.         words = ''
  50.         charset = 'abcdefghijklmnopqrtuvwxyz'*2 + '0123456789'
  51.  
  52.         for i in range(random.randint(2, 7)): words += random.choice(charset)
  53.  
  54.         return words
  55.  
  56.     def downloadImages(self):
  57.         '''
  58.         Scarica nella cartella yahooIMGs le foto che vengono trovate in rete...
  59.         '''
  60.  
  61.         numberIMGs = len(self.imagesURLs)
  62.         posIMGs = 1
  63.  
  64.         for imageName in self.imagesURLs:
  65.             print '[' + str(posIMGs) + '/' + str(numberIMGs) + '] - ' + imageName
  66.             urllib.urlretrieve(imageName, 'yahooIMGs' + os.sep + os.path.split(imageName)[1])
  67.             posIMGs += 1
  68.  
  69. if __name__ == '__main__':
  70.  
  71.     test = yahooImages()
  72.  
  73.     test.getRandomImages()
  74.     test.downloadImages()
  75.  
  76.     print 'Finito...'

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