def http_error_303(self, url, fp, errcode, errmsg, headers, data=None):
        return self.http_error_302(url, fp, errcode, errmsg, headers, data)
Error 303 -- also relocated (essentially identical to 302).
dataset/ETHPy150Open kleientertainment/ds_mod_tools/pkg/win32/Python27/Lib/urllib.py/FancyURLopener.http_error_303