python实现计算资源图标crc值的方法

 def _get_iconcrc(self, file_path): 
 """ 
 Generates the crc32 hash of the icon of the file. 
 @return: str, the str value of the file's icon 
 """ 
 iconData = "" 
 
 mype = pefile.PE(file_path) 
 if hasattr(mype, "DIRECTORY_ENTRY_RESOURCE"): 
 resIcons = filter(lambda x: x.id==pefile.RESOURCE_TYPE['RT_ICON'], mype.DIRECTORY_ENTRY_RESOURCE.entries) 
 if len(resIcons)>0: 
 resIcons = resIcons[0] 
 if hasattr(resIcons, "directory"): 
 for resId in resIcons.directory.entries: 
 if hasattr(resId, 'directory'): 
 for resLang in resId.directory.entries: 
 iconData += mype.get_data(resLang.data.struct.OffsetToData, resLang.data.struct.Size) 
 
 if not iconData: 
 print "not iconData" 
 return None 
 else: 
 return self._crc32(iconData)