python抓取页面图片解决思路

python抓取页面图片
在http://www.cnblogs.com/flysun/archive/2009/06/16/1504278.html找了个程序，代码如下：
1import win32com.client,time,win32inet,win32file,os
2class ImgDownloader:
3    def __init__(self,url,dir):
4        self.__dir=dir
5        self.__ie=win32com.client.Dispatch('InternetExplorer.Application')
6        self.__ie.Navigate(url)
7        self.__wait__()
8
9    def __wait__(self):
10        while self.__ie.Busy:
11            time.sleep(0.1)
12
13    def start(self):
14        self.__wait__()
15        imgs=self.__ie.Document.getElementsByTagName('img')
16      
17        for i in range(imgs.length):
18            try:
19                cachInfo=win32inet.GetUrlCacheEntryInfo(imgs.src)
20                if cachInfo:
21                    path=cachInfo['LocalFileName']
22                    pathinfo=path.split('\\')
23                    pathinfo.reverse()
24                    filename=('[%d]' % i) + pathinfo[0]
25
26                    win32file.CopyFile(path,os.path.join(self.__dir,filename),True)
27            except:
28                pass
29    def close(self):
30        self.__ie.Quit()
31
32if __name__=='__main__':
33    d=ImgDownloader('http://image.baidu.com/i?ct=201326592&cl=2&lm=-1&tn=baiduimage&pv=&word=boy&z=0','c:\\temp\\')
34    d.start()
35    d.close()
在IDLE中运行的时候：
Traceback (most recent call last):
  File "E:\catch.py", line 33, in <module>
    d=ImgDownloader('http://www.hao123.com/','E:\\temp\\')
  File "E:\catch.py", line 5, in __init__
    self.__ie=win32com.client.Dispatch('InternetExplorer.Application')
  File "C:\Python32\lib\site-packages\win32com\client\__init__.py", line 95, in Dispatch
    dispatch, userName = dynamic._GetGoodDispatchAndUserName(dispatch,userName,clsctx)
  File "C:\Python32\lib\site-packages\win32com\client\dynamic.py", line 108, in _GetGoodDispatchAndUserName
    return (_GetGoodDispatch(IDispatch, clsctx), userName)
  File "C:\Python32\lib\site-packages\win32com\client\dynamic.py", line 85, in _GetGoodDispatch

    IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx, pythoncom.IID_IDispatch)
pywintypes.com_error: (-2147024893, '系统找不到指定的路径。', None, None)
请问如何解决问题？？
[解决办法]
没啥问题了，关键运行代码时候，最好关闭浏览器，而且默认浏览器是IE

import win32com.client,time,win32inet,win32file,os
class ImgDownloader:
def __init__(self,url,dir):
self.__dir=dir
self.__ie=win32com.client.Dispatch('InternetExplorer.Application.1')
self.__ie.Navigate(url)
self.__ie.Visible = 1
self.__wait__()

def __wait__(self):
while self.__ie.Busy:
time.sleep(0.5)

def start(self):
self.__wait__()
imgs=self.__ie.Document.getElementsByTagName('img')
    
for i in range(imgs.length):
try:
cachInfo=win32inet.GetUrlCacheEntryInfo(imgs[i].src)
if cachInfo:
path=cachInfo['LocalFileName']
pathinfo=path.split('\\')
pathinfo.reverse()
filename=('[%d]' % i) + pathinfo[0]
  
win32file.CopyFile(path,os.path.join(self.__dir,filename),True)
except:
pass
def close(self):
self.__ie.Quit()

if __name__=='__main__':
d=ImgDownloader('http://www.hao123.com/','E:\\temp\\')
d.start()
d.close()