本人使用的是Mac系统 ，Mac本身自带Python2.7，所以本人在通过brew去进行安装的过程中出现了问题，最后选择了比较简单的从官网直接下载后进行安装并且修改默认的python运行环境的方式。
官网python下载地址：https://www.python.org/downloads/mac-osx/ 本人下载的最新版本3.8.2进行傻瓜式安装即可。
安装完成后修改默认运行版本：
#查找python3安装路径
brew info python3
#修改 Mac 系统配置文件
vi ~/.bash_profile
#添加配置信息
alias python="/usr/local/bin/python3"
#编译系统配置文件
source ~/.bash_profile
#系统当前的python版本。
python -V
如此便完成了python环境的准备，接下来我们进行代码编程。
接下来我们可以进行编码了，可以在应用程序中找到“IDEL”引用打开，或者创建文本后将文件修改成py后缀。
写如下代码：
我将文件保存到到了/Users/zhengbozheng/Documents/python 下接下来通过命令符进行操作，进入到当前目录下执行该代码：python 文件夹名称.py 进行执行。
会发现出现如下的错误：
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 1319, in do_open
h.request(req.get_method(), req.selector, req.data, headers,
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/http/client.py", line 1230, in request
self._send_request(method, url, body, headers, encode_chunked)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/http/client.py", line 1276, in _send_request
self.endheaders(body, encode_chunked=encode_chunked)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/http/client.py", line 1225, in endheaders
self._send_output(message_body, encode_chunked=encode_chunked)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/http/client.py", line 1004, in _send_output
self.send(msg)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/http/client.py", line 944, in send
self.connect()
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/http/client.py", line 1399, in connect
self.sock = self._context.wrap_socket(self.sock,
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/ssl.py", line 500, in wrap_socket
return self.sslsocket_class._create(
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/ssl.py", line 1040, in _create
self.do_handshake()
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/ssl.py", line 1309, in do_handshake
self._sslobj.do_handshake()
ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "python-pc1-fb.py", line 9, in <module>
response = urllib.request.urlopen(url)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 222, in urlopen
return opener.open(url, data, timeout)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 525, in open
response = self._open(req, data)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 542, in _open
result = self._call_chain(self.handle_open, protocol, protocol +
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 502, in _call_chain
result = func(*args)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 1362, in https_open
return self.do_open(http.client.HTTPSConnection, req,
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 1322, in do_open
raise URLError(err)
urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)>
这个错误是ssl证书验证导致的，我们需要取消证书验证即可：
执行文件出现了如下错误：
Traceback (most recent call last):
File "python-pc1-fb.py", line 14, in <module>
response = urllib.request.urlopen(url)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 222, in urlopen
return opener.open(url, data, timeout)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 531, in open
response = meth(req, response)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 640, in http_response
response = self.parent.error(
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 569, in error
return self._call_chain(*args)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 502, in _call_chain
result = func(*args)
File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/urllib/request.py", line 649, in http_error_default
raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden
看报错是找到网站403通讯出现了问题，这个可能是因为网站做了反爬虫处理，查看了官网对代码进行了调整。
代码修改如下：
再次执行后就能获取到你想要的信息了。
