打开网页错误？

2008ill

Traceback (most recent call last):
  File "/home/illdian/p1/周长(复件).py", line 6, in <module>
    aaa=urllib.request.urlopen("https://xueqiu.com/")
  File "/usr/lib/python3.6/urllib/request.py", line 223, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.6/urllib/request.py", line 532, in open
    response = meth(req, response)
  File "/usr/lib/python3.6/urllib/request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python3.6/urllib/request.py", line 570, in error
    return self._call_chain(*args)
  File "/usr/lib/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.6/urllib/request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden



哪里错了

2008ill

代码：
import os
import urllib.request


aaa=urllib.request.urlopen("https://xueqiu.com/")
bbb=aaa.read()

xy123151

HTTP Error 403: Forbidden
没写header，目标网站知道你是爬虫，不是人为访问，把你拦下来了