fetchers.py 文件源码

def _download(self):
        try:
            try:
                import urllib.request
                from urllib.error import URLError, HTTPError
                with urllib.request.urlopen(self.url) as response, \
                        open(self.outputfile_origin, 'wb') as outfile:
                    shutil.copyfileobj(response, outfile)
            except (AttributeError, ImportError):
                import urllib
                urllib.urlretrieve(self.url, self.outputfile_origin)
        except (URLError, HTTPError, IOError, Exception) as e:
            logger.debug("Unable to retrieve %s for %s", self.url, e)