package_index.py 文件源码

def open_url(self, url, warning=None):
        if url.startswith('file:'):
            return local_open(url)
        try:
            return open_with_auth(url, self.opener)
        except (ValueError, httplib.InvalidURL) as v:
            msg = ' '.join([str(arg) for arg in v.args])
            if warning:
                self.warn(warning, msg)
            else:
                raise DistutilsError('%s %s' % (url, msg))
        except urllib2.HTTPError as v:
            return v
        except urllib2.URLError as v:
            if warning:
                self.warn(warning, v.reason)
            else:
                raise DistutilsError("Download error for %s: %s"
                                     % (url, v.reason))
        except httplib.BadStatusLine as v:
            if warning:
                self.warn(warning, v.line)
            else:
                raise DistutilsError(
                    '%s returned a bad status line. The server might be '
                    'down, %s' %
                    (url, v.line)
                )
        except httplib.HTTPException as v:
            if warning:
                self.warn(warning, v)
            else:
                raise DistutilsError("Download error for %s: %s"
                                     % (url, v))