python - 无法打开 urllib2 中的某些 url，但仍可以在浏览器中打开？

Question

我可以打开这个url在 firefox 或 chrome 中，但我无法使用 urllib2 打开它。

>>> req = urllib2.Request(r"http://ratedata.gaincapital.com/2014/.\01 January", headers={'User-Agent' : "Mozilla/5.1"})
>>> urllib2.urlopen(req)

Traceback (most recent call last):
  File "<pyshell#134>", line 1, in <module>
    urllib2.urlopen(req)
  File "/usr/lib/python2.7/urllib2.py", line 127, in urlopen
    return _opener.open(url, data, timeout)
  File "/usr/lib/python2.7/urllib2.py", line 410, in open
    response = meth(req, response)
  File "/usr/lib/python2.7/urllib2.py", line 523, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python2.7/urllib2.py", line 448, in error
    return self._call_chain(*args)
  File "/usr/lib/python2.7/urllib2.py", line 382, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 531, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
HTTPError: HTTP Error 400: Bad Request

非常奇怪的网址，但我该如何解决这个问题？

Answer 1

用 %20 替换空格

>>> req = urllib2.Request(r"http://ratedata.gaincapital.com/2014/.\01%20January", headers={'User-Agent' : "Mozilla/5.1"})
>>> urllib2.urlopen(req)
<addinfourl at 139708797193896 whose fp = <socket._fileobject object at 0x7f10820eb2d0>>