TypeError：__str__返回了非字符串（类型错误）

Question

我有一个URL，可以用邮递员打它，也可以直接在浏览器上打它。但是使用python时，我总是会收到此错误。还尝试用verify = False。

请检查并提出建议。

其他信息： 操作系统：MAC Python：2.7

>>> requests.get(url)                                                                                            Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Python/2.7/site-packages/requests/api.py", line 69, in get
    return request('get', url, params=params, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/api.py", line 50, in request
    response = session.request(method=method, url=url, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/sessions.py", line 465, in request
    resp = self.send(prep, **send_kwargs)
  File "/Library/Python/2.7/site-packages/requests/sessions.py", line 573, in send
    r = adapter.send(request, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/adapters.py", line 370, in send
    timeout=timeout
  File "/Library/Python/2.7/site-packages/requests/packages/urllib3/connectionpool.py", line 544, in urlopen
    body=body, headers=headers)
  File "/Library/Python/2.7/site-packages/requests/packages/urllib3/connectionpool.py", line 344, in _make_request
    self._raise_timeout(err=e, url=url, timeout_value=conn.timeout)
  File "/Library/Python/2.7/site-packages/requests/packages/urllib3/connectionpool.py", line 314, in _raise_timeout
    if 'timed out' in str(err) or 'did not complete (read)' in str(err):  # Python 2.6
TypeError: __str__ returned non-string (type Error)