import requests
r = requests.get("http://www.baidu.com/")
print(r)

結果：
<提示：如果你的抓取軟體沒有認證，認證後也不會出現錯誤，這個屬於衝突，個人理解>

<Response [200]>

訪問www.zhaopin.com程式碼：

Traceback (most recent call last):
  File "D:\python\lib\site-packages\urllib3\connectionpool.py", line 594, in urlopen
    self._prepare_proxy(conn)
  File "D:\python\lib\site-packages\urllib3\connectionpool.py", line 815, in _prepare_proxy
    conn.connect()
  File "D:\python\lib\site-packages\urllib3\connection.py", line 356, in connect
    ssl_context=context)
  File "D:\python\lib\site-packages\urllib3\util\ssl_.py", line 359, in ssl_wrap_socket
    return context.wrap_socket(sock, server_hostname=server_hostname)
  File "D:\python\lib\ssl.py", line 401, in wrap_socket
    _context=self, _session=session)
  File "D:\python\lib\ssl.py", line 808, in __init__
    self.do_handshake()
  File "D:\python\lib\ssl.py", line 1061, in do_handshake
    self._sslobj.do_handshake()
  File "D:\python\lib\ssl.py", line 683, in do_handshake
    self._sslobj.do_handshake()
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:\python\lib\site-packages\requests\adapters.py", line 445, in send
    timeout=timeout
  File "D:\python\lib\site-packages\urllib3\connectionpool.py", line 638, in urlopen
    _stacktrace=sys.exc_info()[2])
  File "D:\python\lib\site-packages\urllib3\util\retry.py", line 398, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='www.zhaopin.com', port=443): Max retries exceeded with url: / (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)'),))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "D:/Python練習1/爬蟲/補的作業/1_requests.py", line 2, in <module>
    r = requests.get("http://www.zhaopin.com/")
  File "D:\python\lib\site-packages\requests\api.py", line 72, in get
    return request('get', url, params=params, **kwargs)
  File "D:\python\lib\site-packages\requests\api.py", line 58, in request
    return session.request(method=method, url=url, **kwargs)
  File "D:\python\lib\site-packages\requests\sessions.py", line 512, in request
    resp = self.send(prep, **send_kwargs)
  File "D:\python\lib\site-packages\requests\sessions.py", line 644, in send
    history = [resp for resp in gen] if allow_redirects else []
  File "D:\python\lib\site-packages\requests\sessions.py", line 644, in <listcomp>
    history = [resp for resp in gen] if allow_redirects else []
  File "D:\python\lib\site-packages\requests\sessions.py", line 222, in resolve_redirects
    **adapter_kwargs
  File "D:\python\lib\site-packages\requests\sessions.py", line 622, in send
    r = adapter.send(request, **kwargs)
  File "D:\python\lib\site-packages\requests\adapters.py", line 511, in send
    raise SSLError(e, request=request)
requests.exceptions.SSLError: HTTPSConnectionPool(host='www.zhaopin.com', port=443): Max retries exceeded with url: / (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:749)'),))
 

經過看別人程式碼後自己新增一句話後正確：

import requests
r = requests.get("http://www.zhaopin.com/",verify=False)
print(r)

響應結果：<Response [200]>