Who save images with attribute "no-cache" with use QNetworkDiskCache ?

PyQt4: 4.8.6
Python: 2.7
OS: WinXP 32bit

Qt Code: 
  1. # coding: utf-8
  2. import os,sys
  3. from PyQt4.QtNetwork import *
  4. from PyQt4.QtCore import *
  5. from PyQt4.QtGui import *
  6. from PyQt4.QtWebKit import *
  7.  
  8. app = QApplication(sys.argv)
  9.  
  10. manager = QNetworkAccessManager()
  11. diskCache = QNetworkDiskCache()
  12. diskCache.setCacheDirectory(os.path.join(os.getcwd(),"cache"))
  13. manager.setCache(diskCache)
  14.  
  15. view = QWebView()
  16. webpage = QWebPage()
  17. view.setPage(webpage)
  18.  
  19. webpage.setNetworkAccessManager(manager)
  20.  
  21. url = "http://acmacolvia.info/img.php"
  22. view.load(QUrl(url))
  23. view.show()
  24. app.exec_()
  25. sys.exit()
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